Finding the Third Proportional to 1,131,309 and 2,439,645

Step by Step Solution

1. Step 1: Write the proportion equation
   1,131,309 : 2,439,645 = 2,439,645 : x
2. Step 2: Convert to fraction form
   1,131,309/2,439,645 = 2,439,645/x
3. Step 3: Cross multiply
   1,131,309x = 2,439,645 × 2,439,645
4. Step 4: Simplify right side
   1,131,309x = 5,951,867,726,025
5. Step 5: Solve for x
   x = 5,951,867,726,025/1,131,309
6. Step 6: Final answer
   x = 5,261,045.15