: Use WinRAR or 7-Zip . Right-click on Part 1 and select "Extract Here"; the software will automatically pull data from Part 3 and the others.
: Scrutinize the source site. If the file size for Part 3 is significantly smaller (e.g., only a few KBs) compared to other parts, it is likely a fake or a virus. Fishing.Sim.World.Pro.Tour.part03.rar
If you are having trouble with a while extracting, : Use WinRAR or 7-Zip