Finding the Third Proportional to 31,250.50 and 67,490

Step by Step Solution

1. Step 1: Write the proportion equation
   31,250.50 : 67,490 = 67,490 : x
2. Step 2: Convert to fraction form
   31,250.50/67,490 = 67,490/x
3. Step 3: Cross multiply
   31,250.50x = 67,490 × 67,490
4. Step 4: Simplify right side
   31,250.50x = 4,554,900,100
5. Step 5: Solve for x
   x = 4,554,900,100/31,250.50
6. Step 6: Final answer
   x = 145,754.47