How to create hasManyThrough?

I have an object called SurveyInterview. This Object has a field called "current_step_id"

I have another object called SurveyUsedQuestions which have a column called question_id and a column called step_id.

Finally I have a third object called SurveyQuestions.

I need to add a hasManyThrough onto my SurveyInterview object which will allow me to access the questions object.

If I was to represent what I need with a query I would do this

SELECT questions.*
FROM interviews
INNER JOIN used_questions ON used_questions.step_id = interview.current_step_id 
INNER JOIN questions ON question_id = used_questions.question_id

if hasManyThrough relation the right was to do this or is there another way I would need to do to build this relation?