Is it possible to link to a specific location in a third party's web page (i.e. can't insert an anchor)? If so, how? It's easy enough to link to a third party's page...but if the page is very long, it quickly loses value.

Is it possible to include specific text to search for in the third party's page, instead of an anchor? Or to like to something else in that page? Or possibly to link 1/2 down the page.....or 65% down the page?