Go to https://www.google.com/chrome/ and click the Download Chrome button 

When prompted, click “Save file” and save the file to a known location on your computer: 

In Firefox, you can click the blue download arrow at the top-right to open recent downloads:  click the arrow and click on ChromeSetup.exe  (You can also just double click the file where you saved it.) 

Enter your computer password at the next prompt and then click Yes.