Finding the Third Proportional to 318,099 and 466,456.50

Step by Step Solution

1. Step 1: Write the proportion equation
   318,099 : 466,456.50 = 466,456.50 : x
2. Step 2: Convert to fraction form
   318,099/466,456.50 = 466,456.50/x
3. Step 3: Cross multiply
   318,099x = 466,456.50 × 466,456.50
4. Step 4: Simplify right side
   318,099x = 217,581,666,392.25
5. Step 5: Solve for x
   x = 217,581,666,392.25/318,099
6. Step 6: Final answer
   x = 684,006.13