Finding the Third Proportional to 1,139,587 and 2,431,718

Step by Step Solution

1. Step 1: Write the proportion equation
   1,139,587 : 2,431,718 = 2,431,718 : x
2. Step 2: Convert to fraction form
   1,139,587/2,431,718 = 2,431,718/x
3. Step 3: Cross multiply
   1,139,587x = 2,431,718 × 2,431,718
4. Step 4: Simplify right side
   1,139,587x = 5,913,252,431,524
5. Step 5: Solve for x
   x = 5,913,252,431,524/1,139,587
6. Step 6: Final answer
   x = 5,188,943.39