Finding the Third Proportional to 6,390.14 and 9,872.82

Step by Step Solution

1. Step 1: Write the proportion equation
   6,390.14 : 9,872.82 = 9,872.82 : x
2. Step 2: Convert to fraction form
   6,390.14/9,872.82 = 9,872.82/x
3. Step 3: Cross multiply
   6,390.14x = 9,872.82 × 9,872.82
4. Step 4: Simplify right side
   6,390.14x = 97,472,658.05
5. Step 5: Solve for x
   x = 97,472,658.05/6,390.14
6. Step 6: Final answer
   x = 15,253.60