Finding the Third Proportional to 8,086.31 and 12,079.69

Step by Step Solution

1. Step 1: Write the proportion equation
   8,086.31 : 12,079.69 = 12,079.69 : x
2. Step 2: Convert to fraction form
   8,086.31/12,079.69 = 12,079.69/x
3. Step 3: Cross multiply
   8,086.31x = 12,079.69 × 12,079.69
4. Step 4: Simplify right side
   8,086.31x = 145,918,850.10
5. Step 5: Solve for x
   x = 145,918,850.10/8,086.31
6. Step 6: Final answer
   x = 18,045.17