Finding the Third Proportional to 320,051.25 and 699,151.50

Step by Step Solution

1. Step 1: Write the proportion equation
   320,051.25 : 699,151.50 = 699,151.50 : x
2. Step 2: Convert to fraction form
   320,051.25/699,151.50 = 699,151.50/x
3. Step 3: Cross multiply
   320,051.25x = 699,151.50 × 699,151.50
4. Step 4: Simplify right side
   320,051.25x = 488,812,819,952.25
5. Step 5: Solve for x
   x = 488,812,819,952.25/320,051.25
6. Step 6: Final answer
   x = 1,527,295.46