The extension PPT3 indicates an editable presentation of the PowerPoint 98 for Mac presentation program from Microsoft. The files correspond as far as possible to a ppt file.
A PPT3 file can contain not only formatted text, lists, images, videos, but also audio data and Excel spreadsheets, which are subdivided into boards or slides or slides. In addition, many elements can be animated or fade in and out, as well as with different effects. Ppt3 files can also contain macros. These macros may contain malicious code, which is why you should do a virus scan before running it.
Most often resolving problems with opening PPT3 files is very simple. Just install an appropriate program that supports such files. All of the listed programs support PPT3 files, but may vary in offered function and purpose. Some programs may be capable only of viewing contents of PPT3 files or offer file conversion options, but may not be capable of editing such files.
It is possible that although a compatible program has been installed on user’s system, it is not used by the system to open it. This may happen because no default application was associated with this type of files. To associate PPT3 files with given application, select "Open with" from drop-down menu (accessed by right-clicking on the file). Then select from the list the program or application you want to be used to open this type of file. If the Microsoft PowerPoint applications is not on the list, select "Browse" option in order to manually locate the directory where Microsoft PowerPoint has been installed.
Sometimes problems with opening PPT3 files may not lie with the application itself, but can arise due to other causes, such as: