Finding the Third Proportional to 1,215,356 and 2,649,400

Step by Step Solution

1. Step 1: Write the proportion equation
   1,215,356 : 2,649,400 = 2,649,400 : x
2. Step 2: Convert to fraction form
   1,215,356/2,649,400 = 2,649,400/x
3. Step 3: Cross multiply
   1,215,356x = 2,649,400 × 2,649,400
4. Step 4: Simplify right side
   1,215,356x = 7,019,320,360,000
5. Step 5: Solve for x
   x = 7,019,320,360,000/1,215,356
6. Step 6: Final answer
   x = 5,775,526.15