Workflow to Publish only approved content

I'd like to create a workflow to publish but only on content that has been approved.

For example, say you have a workflow for content approval:

start approval workflow for content-fragment-1 -> content-fragment-1 approved -> end approval workflow

Then you would have 

start publish workflow for content-fragment-1 -> content-fragment-1 publish -> end publish workflow

But, what happens if someone makes a changes content-fragment-1 between the approval workflow and the publish workflow?

Is there a way to only publish approved content?