Finding the Third Proportional to 1,139,543 and 2,431,612

Step by Step Solution

1. Step 1: Write the proportion equation
   1,139,543 : 2,431,612 = 2,431,612 : x
2. Step 2: Convert to fraction form
   1,139,543/2,431,612 = 2,431,612/x
3. Step 3: Cross multiply
   1,139,543x = 2,431,612 × 2,431,612
4. Step 4: Simplify right side
   1,139,543x = 5,912,736,918,544
5. Step 5: Solve for x
   x = 5,912,736,918,544/1,139,543
6. Step 6: Final answer
   x = 5,188,691.36