Grandparent account field, hierarchy account 2016

I have a 2 tiers of hierarchy accounts: child account < parent account < grandparent account (parent account's parent account). I can see this in the hierarchy tree correctly.

Is there a way to display/pull the grandparent account name in a field on the child account entity page? So I can add the grandparent field into the 'All Accounts' view and also differentiate parent accounts from grandparent accounts. 

I tried creating a workflow, but it was only pulling the parent account info into the field not the parent account's parent. Or is there a cleaner method to display the grandparent field?

Below are my workflow settings:

Condition, to check if parent account has a parent account: 

Update Account record with Parent Account's Parent:

Thanks