Finding the Third Proportional to 6,428.11 and 10,018.05

Step by Step Solution

1. Step 1: Write the proportion equation
   6,428.11 : 10,018.05 = 10,018.05 : x
2. Step 2: Convert to fraction form
   6,428.11/10,018.05 = 10,018.05/x
3. Step 3: Cross multiply
   6,428.11x = 10,018.05 × 10,018.05
4. Step 4: Simplify right side
   6,428.11x = 100,361,419.72
5. Step 5: Solve for x
   x = 100,361,419.72/6,428.11
6. Step 6: Final answer
   x = 15,612.90