Finding the Third Proportional to 11,515.50 and 17,269.88

Step by Step Solution

1. Step 1: Write the proportion equation
   11,515.50 : 17,269.88 = 17,269.88 : x
2. Step 2: Convert to fraction form
   11,515.50/17,269.88 = 17,269.88/x
3. Step 3: Cross multiply
   11,515.50x = 17,269.88 × 17,269.88
4. Step 4: Simplify right side
   11,515.50x = 298,248,582.52
5. Step 5: Solve for x
   x = 298,248,582.52/11,515.50
6. Step 6: Final answer
   x = 25,899.75