Finding the Third Proportional to 103,123.50 and 216,624

Step by Step Solution

1. Step 1: Write the proportion equation
   103,123.50 : 216,624 = 216,624 : x
2. Step 2: Convert to fraction form
   103,123.50/216,624 = 216,624/x
3. Step 3: Cross multiply
   103,123.50x = 216,624 × 216,624
4. Step 4: Simplify right side
   103,123.50x = 46,925,957,376
5. Step 5: Solve for x
   x = 46,925,957,376/103,123.50
6. Step 6: Final answer
   x = 455,046.21