Finding the Third Proportional to 14,239.13 and 20,435.63

Step by Step Solution

1. Step 1: Write the proportion equation
   14,239.13 : 20,435.63 = 20,435.63 : x
2. Step 2: Convert to fraction form
   14,239.13/20,435.63 = 20,435.63/x
3. Step 3: Cross multiply
   14,239.13x = 20,435.63 × 20,435.63
4. Step 4: Simplify right side
   14,239.13x = 417,614,769.14
5. Step 5: Solve for x
   x = 417,614,769.14/14,239.13
6. Step 6: Final answer
   x = 29,328.68