Finding the Third Proportional to 10,987.50 and 17,026.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,987.50 : 17,026.50 = 17,026.50 : x
2. Step 2: Convert to fraction form
   10,987.50/17,026.50 = 17,026.50/x
3. Step 3: Cross multiply
   10,987.50x = 17,026.50 × 17,026.50
4. Step 4: Simplify right side
   10,987.50x = 289,901,702.25
5. Step 5: Solve for x
   x = 289,901,702.25/10,987.50
6. Step 6: Final answer
   x = 26,384.68