Could a tailed beast become a Jinchuriki I know that together all the tailed beast create the ten tails but could a tailed beast be sealed inside another tailed beast. Excluding the ten tails of course.
No.  It's also never been explored in any official capacity, either.

Jinchuriki means "power of human sacrifice".  This implies that only a human can take on the immense energies of a tailed beast.