Finding the Third Proportional to 9,409.50 and 12,490.88

Step by Step Solution

1. Step 1: Write the proportion equation
   9,409.50 : 12,490.88 = 12,490.88 : x
2. Step 2: Convert to fraction form
   9,409.50/12,490.88 = 12,490.88/x
3. Step 3: Cross multiply
   9,409.50x = 12,490.88 × 12,490.88
4. Step 4: Simplify right side
   9,409.50x = 156,021,958.27
5. Step 5: Solve for x
   x = 156,021,958.27/9,409.50
6. Step 6: Final answer
   x = 16,581.32