Finding the Third Proportional to 1,131,138 and 2,439,396

Step by Step Solution

1. Step 1: Write the proportion equation
   1,131,138 : 2,439,396 = 2,439,396 : x
2. Step 2: Convert to fraction form
   1,131,138/2,439,396 = 2,439,396/x
3. Step 3: Cross multiply
   1,131,138x = 2,439,396 × 2,439,396
4. Step 4: Simplify right side
   1,131,138x = 5,950,652,844,816
5. Step 5: Solve for x
   x = 5,950,652,844,816/1,131,138
6. Step 6: Final answer
   x = 5,260,766.45