Finding the Third Proportional to 11,128 and 15,028

Step by Step Solution

1. Step 1: Write the proportion equation
   11,128 : 15,028 = 15,028 : x
2. Step 2: Convert to fraction form
   11,128/15,028 = 15,028/x
3. Step 3: Cross multiply
   11,128x = 15,028 × 15,028
4. Step 4: Simplify right side
   11,128x = 225,840,784
5. Step 5: Solve for x
   x = 225,840,784/11,128
6. Step 6: Final answer
   x = 20,294.82