Finding the Third Proportional to 30,416.91 and 40,687.31

Step by Step Solution

1. Step 1: Write the proportion equation
   30,416.91 : 40,687.31 = 40,687.31 : x
2. Step 2: Convert to fraction form
   30,416.91/40,687.31 = 40,687.31/x
3. Step 3: Cross multiply
   30,416.91x = 40,687.31 × 40,687.31
4. Step 4: Simplify right side
   30,416.91x = 1,655,457,398.47
5. Step 5: Solve for x
   x = 1,655,457,398.47/30,416.91
6. Step 6: Final answer
   x = 54,425.57