Finding the Third Proportional to 14,439.38 and 21,157.88

Step by Step Solution

1. Step 1: Write the proportion equation
   14,439.38 : 21,157.88 = 21,157.88 : x
2. Step 2: Convert to fraction form
   14,439.38/21,157.88 = 21,157.88/x
3. Step 3: Cross multiply
   14,439.38x = 21,157.88 × 21,157.88
4. Step 4: Simplify right side
   14,439.38x = 447,655,674.52
5. Step 5: Solve for x
   x = 447,655,674.52/14,439.38
6. Step 6: Final answer
   x = 31,002.43