Systems have a relationship to an Account

Contracts have a relationship to a System

I always want to be able to see the associated Account for that Contract (through the System).

I have a field:

System :: (Lookup Field, Lookup Type = "System")   // System is the custom submodule that has a Lookup Field field "Account"

I want another field that retrieves the Account from the System record and provides that as a link.

Is a second order lookup such as this a possibility?