Conversion of kth files to pps file format

It is unlikely that it is possible to convert .kth (Keynote Themes) to a .pps file (PowerPoint slideshow presentation). It might be however possible to apply the theme on your presentation in Keynote and chose to export the presentation in PowerPoint format. But that is more of a working process and not actual kth to pps conversion.

Open KTH file    Open PPS file