Finding the Third Proportional to 31,056.50 and 67,057

Step by Step Solution

1. Step 1: Write the proportion equation
   31,056.50 : 67,057 = 67,057 : x
2. Step 2: Convert to fraction form
   31,056.50/67,057 = 67,057/x
3. Step 3: Cross multiply
   31,056.50x = 67,057 × 67,057
4. Step 4: Simplify right side
   31,056.50x = 4,496,641,249
5. Step 5: Solve for x
   x = 4,496,641,249/31,056.50
6. Step 6: Final answer
   x = 144,789.05