Finding the Third Proportional to 1,397,510 and 2,216,457

Step by Step Solution

1. Step 1: Write the proportion equation
   1,397,510 : 2,216,457 = 2,216,457 : x
2. Step 2: Convert to fraction form
   1,397,510/2,216,457 = 2,216,457/x
3. Step 3: Cross multiply
   1,397,510x = 2,216,457 × 2,216,457
4. Step 4: Simplify right side
   1,397,510x = 4,912,681,632,849
5. Step 5: Solve for x
   x = 4,912,681,632,849/1,397,510
6. Step 6: Final answer
   x = 3,515,310.54