'medium between' is an acceptable phrase and can be used in written English.
It typically refers to a way of connecting two items. For example, "The Internet serves as a medium between past and present."
I think a happy medium between the two can be reached".
Sraosha is the medium between man and God.
Hwin told me that he had found a happy medium between two worlds.
Herald Tribune struck medium between Times and World, which printed every name.
(e) Drop test results display no difference in growth on YPEG medium between the studied strains.
Ms. O'Donnell would like Mr. Kola to maintain a happy medium between performing and family life.
The Center itself acts a medium between people, technologies, and ideas.
"This is a medium between what we wear inside and outside," says Isenberg on the Sleep Shirt.
A medium between those who have "crossed" to the US and those left behind, she is herself a messenger.
However, overall, the emotional effect of our favorite music has tended right towards the 'happy medium' between happy and sad".
He has managed to find the happy medium between street grit and popular dance-ready Afrobeats rhythms and melodies.
