Finding the Third Proportional to 8,188.59 and 12,434.77

Step by Step Solution

1. Step 1: Write the proportion equation
   8,188.59 : 12,434.77 = 12,434.77 : x
2. Step 2: Convert to fraction form
   8,188.59/12,434.77 = 12,434.77/x
3. Step 3: Cross multiply
   8,188.59x = 12,434.77 × 12,434.77
4. Step 4: Simplify right side
   8,188.59x = 154,623,396.15
5. Step 5: Solve for x
   x = 154,623,396.15/8,188.59
6. Step 6: Final answer
   x = 18,882.78