Finding the Third Proportional to 1,397,508 and 2,216,454

Step by Step Solution

1. Step 1: Write the proportion equation
   1,397,508 : 2,216,454 = 2,216,454 : x
2. Step 2: Convert to fraction form
   1,397,508/2,216,454 = 2,216,454/x
3. Step 3: Cross multiply
   1,397,508x = 2,216,454 × 2,216,454
4. Step 4: Simplify right side
   1,397,508x = 4,912,668,334,116
5. Step 5: Solve for x
   x = 4,912,668,334,116/1,397,508
6. Step 6: Final answer
   x = 3,515,306.05