Subject: how to acheive equal weight index?

Recently there has been some discussion here of equal weight index (QQQE and RSP) now being a better value than the SP500 index.

My problem is that much of my investments are in a workplace retirement plan, where I have choices of low cost index funds for SP500, total market index, and extended market index. But no equal weight index.

Is there a way to approximate an equal weight index by using some combination of total market index & extended market index? At what ratio?

Stopped Clock