system.web.httpexception maximum request length exceeded sharepoint 2010

Users get an error while uploading a document bigger than 50mb.
SP has a default upload setting of 50mb document. If we need to incrase the size to allow up to 200mb of documents, below are the places where we do it:-

1) In central admin, go to Manage web applications- Click on web app and click general settings- scroll down to and put 200 at place of 50 and save it.
2) Next we need to update web app web.config file under c:\intepub directoru. open the web.config file and search for timout. Now edit the following entries:-
Increase the maxrequestlength to 215200 and execution time to 9999 and save it.

It should be good to go now. Please try to upload again and it should work.