Finding the Third Proportional to 4,399.31 and 9,451.69

Step by Step Solution

1. Step 1: Write the proportion equation
   4,399.31 : 9,451.69 = 9,451.69 : x
2. Step 2: Convert to fraction form
   4,399.31/9,451.69 = 9,451.69/x
3. Step 3: Cross multiply
   4,399.31x = 9,451.69 × 9,451.69
4. Step 4: Simplify right side
   4,399.31x = 89,334,396.60
5. Step 5: Solve for x
   x = 89,334,396.60/4,399.31
6. Step 6: Final answer
   x = 20,306.44