comparing data in two columns

[daupdike]

I am sure this will be easy for this community.

I have 3 sheets (names in bold), sheet one is for my Data input, sheet two is an amortization schedule for a borrower’s Current Loan and sheet three is an amortization schedule for a borrower’s proposed Refinance Loan. 

I want to determine the Payment Date for when the Ending Balance of the Refinance Loan is equal to or lower than the Loan Balance after Payment of the Current Loan.

[#2]

Did I submit this question correctly and to the right discussion group?  Please help. Thanks  @daupdike 

[#3]

@Peter Bartholomew I saw that you recently solved someone's problem, so I was hoping you might be able to help me.  Thanks

[#4]

here is the spreadsheet 

[#5]

@daupdike 

I do not have a finance background but I enclose some exploration.  I did try goal seek but with discrete payments goal seek did not converge.