Finding the Third Proportional to 152,628 and 331,530

Step by Step Solution

1. Step 1: Write the proportion equation
   152,628 : 331,530 = 331,530 : x
2. Step 2: Convert to fraction form
   152,628/331,530 = 331,530/x
3. Step 3: Cross multiply
   152,628x = 331,530 × 331,530
4. Step 4: Simplify right side
   152,628x = 109,912,140,900
5. Step 5: Solve for x
   x = 109,912,140,900/152,628
6. Step 6: Final answer
   x = 720,130.91