Chrome can be difficult to install on a machine which is not connected to the internet. You may ask why you would want a web browser installed a machine which cannot browse the web, but it is often required for browsing internal URLs, or testing a web server internally, for example.
The normal installer downloads a small installer, which then downloads the actual browser. This also fails through a proxy server. Luckily you can download the standalone installer using this link:
this is almost an exatct pic!