Finding the Third Proportional to 8,431.31 and 18,350.06

Step by Step Solution

1. Step 1: Write the proportion equation
   8,431.31 : 18,350.06 = 18,350.06 : x
2. Step 2: Convert to fraction form
   8,431.31/18,350.06 = 18,350.06/x
3. Step 3: Cross multiply
   8,431.31x = 18,350.06 × 18,350.06
4. Step 4: Simplify right side
   8,431.31x = 336,724,793.75
5. Step 5: Solve for x
   x = 336,724,793.75/8,431.31
6. Step 6: Final answer
   x = 39,937.41