Searching the broader web can be useful, especially if you keep in mind that an exported Processing sketch is a Java application or applet. There are numerous solutions to be found in the search results...

If you use the Export | Applet option then move the webpage/applet to a web server then according to this post it should be possible to display the webpage in a PowerPoint presentatio.

I have no idea if it works but the instructions are simple enough to follow.

thanks for the help!