Finding the Third Proportional to 12,737.50 and 16,987.88

Step by Step Solution

1. Step 1: Write the proportion equation
   12,737.50 : 16,987.88 = 16,987.88 : x
2. Step 2: Convert to fraction form
   12,737.50/16,987.88 = 16,987.88/x
3. Step 3: Cross multiply
   12,737.50x = 16,987.88 × 16,987.88
4. Step 4: Simplify right side
   12,737.50x = 288,587,897.02
5. Step 5: Solve for x
   x = 288,587,897.02/12,737.50
6. Step 6: Final answer
   x = 22,656.56