Finding the Third Proportional to 2,649,978 and 5,719,620

Step by Step Solution

1. Step 1: Write the proportion equation
   2,649,978 : 5,719,620 = 5,719,620 : x
2. Step 2: Convert to fraction form
   2,649,978/5,719,620 = 5,719,620/x
3. Step 3: Cross multiply
   2,649,978x = 5,719,620 × 5,719,620
4. Step 4: Simplify right side
   2,649,978x = 32,714,052,944,400
5. Step 5: Solve for x
   x = 32,714,052,944,400/2,649,978
6. Step 6: Final answer
   x = 12,345,028.13