Finding the Third Proportional to 11,128.50 and 17,331

Step by Step Solution

1. Step 1: Write the proportion equation
   11,128.50 : 17,331 = 17,331 : x
2. Step 2: Convert to fraction form
   11,128.50/17,331 = 17,331/x
3. Step 3: Cross multiply
   11,128.50x = 17,331 × 17,331
4. Step 4: Simplify right side
   11,128.50x = 300,363,561
5. Step 5: Solve for x
   x = 300,363,561/11,128.50
6. Step 6: Final answer
   x = 26,990.48