Finding the Third Proportional to 3,321,210 and 7,143,105

Step by Step Solution

1. Step 1: Write the proportion equation
   3,321,210 : 7,143,105 = 7,143,105 : x
2. Step 2: Convert to fraction form
   3,321,210/7,143,105 = 7,143,105/x
3. Step 3: Cross multiply
   3,321,210x = 7,143,105 × 7,143,105
4. Step 4: Simplify right side
   3,321,210x = 51,023,949,041,025
5. Step 5: Solve for x
   x = 51,023,949,041,025/3,321,210
6. Step 6: Final answer
   x = 15,363,060.16