A bank lends you $$600,000$ with a $6\mathrm{.}00\%$ nominal interest rate. The loan requires

monthly interest$-$only payments for $18$ months, followed by equal monthly payments of

principal and interest payments based on a $25$ year amortization schedule. The loan

matures in $5$ years. What is the balloon payment due at the end of month $60?$ Round all

calculations and your final answer to the nearest penny. Express as a positive value $($or

absolute value$).$