Finding the Third Proportional to 8,102.11 and 12,498.89

Step by Step Solution

1. Step 1: Write the proportion equation
   8,102.11 : 12,498.89 = 12,498.89 : x
2. Step 2: Convert to fraction form
   8,102.11/12,498.89 = 12,498.89/x
3. Step 3: Cross multiply
   8,102.11x = 12,498.89 × 12,498.89
4. Step 4: Simplify right side
   8,102.11x = 156,222,266.86
5. Step 5: Solve for x
   x = 156,222,266.86/8,102.11
6. Step 6: Final answer
   x = 19,281.68