Finding the Third Proportional to 318,957 and 433,363.50

Step by Step Solution

1. Step 1: Write the proportion equation
   318,957 : 433,363.50 = 433,363.50 : x
2. Step 2: Convert to fraction form
   318,957/433,363.50 = 433,363.50/x
3. Step 3: Cross multiply
   318,957x = 433,363.50 × 433,363.50
4. Step 4: Simplify right side
   318,957x = 187,803,923,132.25
5. Step 5: Solve for x
   x = 187,803,923,132.25/318,957
6. Step 6: Final answer
   x = 588,806.40