Finding the Third Proportional to 3,340.30 and 7,171.82

Step by Step Solution

1. Step 1: Write the proportion equation
   3,340.30 : 7,171.82 = 7,171.82 : x
2. Step 2: Convert to fraction form
   3,340.30/7,171.82 = 7,171.82/x
3. Step 3: Cross multiply
   3,340.30x = 7,171.82 × 7,171.82
4. Step 4: Simplify right side
   3,340.30x = 51,435,034.61
5. Step 5: Solve for x
   x = 51,435,034.61/3,340.30
6. Step 6: Final answer
   x = 15,398.32