Three month ago, your cousin purchased a house priced at $350,000 with 30% down and 70% on mortgage loan. The 30-year mortgage had a fixed rate 4.8% APR and required same amount of monthly payment at the end of each month.

Calculate the monthly payment amount of this 30-year mortgage.

Help your cousin calculate the loan balance after making the 3rd monthly payment by constructing the amortization table.