Finding the Third Proportional to 8,115.82 and 12,141.46

Step by Step Solution

1. Step 1: Write the proportion equation
   8,115.82 : 12,141.46 = 12,141.46 : x
2. Step 2: Convert to fraction form
   8,115.82/12,141.46 = 12,141.46/x
3. Step 3: Cross multiply
   8,115.82x = 12,141.46 × 12,141.46
4. Step 4: Simplify right side
   8,115.82x = 147,414,978.84
5. Step 5: Solve for x
   x = 147,414,978.84/8,115.82
6. Step 6: Final answer
   x = 18,163.90