Finding the Third Proportional to 9,987.25 and 15,666.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,987.25 : 15,666.50 = 15,666.50 : x
2. Step 2: Convert to fraction form
   9,987.25/15,666.50 = 15,666.50/x
3. Step 3: Cross multiply
   9,987.25x = 15,666.50 × 15,666.50
4. Step 4: Simplify right side
   9,987.25x = 245,439,222.25
5. Step 5: Solve for x
   x = 245,439,222.25/9,987.25
6. Step 6: Final answer
   x = 24,575.26