Finding the Third Proportional to 14,238.28 and 21,239.72

Step by Step Solution

1. Step 1: Write the proportion equation
   14,238.28 : 21,239.72 = 21,239.72 : x
2. Step 2: Convert to fraction form
   14,238.28/21,239.72 = 21,239.72/x
3. Step 3: Cross multiply
   14,238.28x = 21,239.72 × 21,239.72
4. Step 4: Simplify right side
   14,238.28x = 451,125,652.58
5. Step 5: Solve for x
   x = 451,125,652.58/14,238.28
6. Step 6: Final answer
   x = 31,684.00