Finding the Third Proportional to 92,431 and 142,722.50

Step by Step Solution

1. Step 1: Write the proportion equation
   92,431 : 142,722.50 = 142,722.50 : x
2. Step 2: Convert to fraction form
   92,431/142,722.50 = 142,722.50/x
3. Step 3: Cross multiply
   92,431x = 142,722.50 × 142,722.50
4. Step 4: Simplify right side
   92,431x = 20,369,712,006.25
5. Step 5: Solve for x
   x = 20,369,712,006.25/92,431
6. Step 6: Final answer
   x = 220,377.49