Finding the Third Proportional to 31,149.38 and 66,376.31

Step by Step Solution

1. Step 1: Write the proportion equation
   31,149.38 : 66,376.31 = 66,376.31 : x
2. Step 2: Convert to fraction form
   31,149.38/66,376.31 = 66,376.31/x
3. Step 3: Cross multiply
   31,149.38x = 66,376.31 × 66,376.31
4. Step 4: Simplify right side
   31,149.38x = 4,405,814,861.10
5. Step 5: Solve for x
   x = 4,405,814,861.10/31,149.38
6. Step 6: Final answer
   x = 141,441.52