Finding the Third Proportional to 267,438.50 and 392,972

Step by Step Solution

1. Step 1: Write the proportion equation
   267,438.50 : 392,972 = 392,972 : x
2. Step 2: Convert to fraction form
   267,438.50/392,972 = 392,972/x
3. Step 3: Cross multiply
   267,438.50x = 392,972 × 392,972
4. Step 4: Simplify right side
   267,438.50x = 154,426,992,784
5. Step 5: Solve for x
   x = 154,426,992,784/267,438.50
6. Step 6: Final answer
   x = 577,429.92