Finding the Third Proportional to 243,787.50 and 323,561.25

Step by Step Solution

1. Step 1: Write the proportion equation
   243,787.50 : 323,561.25 = 323,561.25 : x
2. Step 2: Convert to fraction form
   243,787.50/323,561.25 = 323,561.25/x
3. Step 3: Cross multiply
   243,787.50x = 323,561.25 × 323,561.25
4. Step 4: Simplify right side
   243,787.50x = 104,691,882,501.56
5. Step 5: Solve for x
   x = 104,691,882,501.56/243,787.50
6. Step 6: Final answer
   x = 429,439.09