Open Question: I need to know how to recorde the journal entry so I can recorded this entry in my adjusted trial balance.?

8.The Mortgage Payable amount of $593,780 is related to the building. The original balance was $600,000 with a monthly payment of $5,063 due on the 15th of each month. The first payment was made on October 15. The interest rate associated with the mortgage is 6%. The last payment made was December 15, 2009 and interest for the second half of December has not been recorded. Does any body know the solution to this problem?"