How to pass value from one form to another?

hi, I would like to pas value in a field to another field between 2 form, 

i will update the rate daily: https://form.jotform.me/70555084774463

the daily rate will be shown in the field of different form: https://form.jotform.me/70555124262450

my customer just key in the qty to the final amount.

May I know how to do it?

You can use this link to pass rate value from the first form to the second: https://form.jotform.me/70555124262450?todayRate={rate}

You should put that link as Thank you page for the first form:

Please check and let us know if it works for you as you wanted.

Thank you!