Finding the Third Proportional to 10,987.13 and 17,026.88

Step by Step Solution

1. Step 1: Write the proportion equation
   10,987.13 : 17,026.88 = 17,026.88 : x
2. Step 2: Convert to fraction form
   10,987.13/17,026.88 = 17,026.88/x
3. Step 3: Cross multiply
   10,987.13x = 17,026.88 × 17,026.88
4. Step 4: Simplify right side
   10,987.13x = 289,914,472.27
5. Step 5: Solve for x
   x = 289,914,472.27/10,987.13
6. Step 6: Final answer
   x = 26,386.75