Finding the Third Proportional to 1,215,366 and 2,649,418

Step by Step Solution

1. Step 1: Write the proportion equation
   1,215,366 : 2,649,418 = 2,649,418 : x
2. Step 2: Convert to fraction form
   1,215,366/2,649,418 = 2,649,418/x
3. Step 3: Cross multiply
   1,215,366x = 2,649,418 × 2,649,418
4. Step 4: Simplify right side
   1,215,366x = 7,019,415,738,724
5. Step 5: Solve for x
   x = 7,019,415,738,724/1,215,366
6. Step 6: Final answer
   x = 5,775,557.11