Automatically share Facebook posts on another Facebook page

Dear,

I have a couple big Facebook pages. They like 1 page with 250k likes and another 1 with 174k likes. I want to make my new pages bigger. I share every post of the "small" pages, so they'll grow fast. At this moment, I do this manual. It costs me a lot of time, so I want to do this automatically. Is this possible and with which tool?

Thank you in advance.

I think for videos there is a crossposting function implemented by facebook: https://media.fb.com/2016/04/12/crossposted-videos-and-insights/

IFTTT.com?