Finding the Third Proportional to 1,139,556 and 2,431,638

Step by Step Solution

1. Step 1: Write the proportion equation
   1,139,556 : 2,431,638 = 2,431,638 : x
2. Step 2: Convert to fraction form
   1,139,556/2,431,638 = 2,431,638/x
3. Step 3: Cross multiply
   1,139,556x = 2,431,638 × 2,431,638
4. Step 4: Simplify right side
   1,139,556x = 5,912,863,363,044
5. Step 5: Solve for x
   x = 5,912,863,363,044/1,139,556
6. Step 6: Final answer
   x = 5,188,743.13