Finding the Third Proportional to 1,131,128 and 2,439,372

Step by Step Solution

1. Step 1: Write the proportion equation
   1,131,128 : 2,439,372 = 2,439,372 : x
2. Step 2: Convert to fraction form
   1,131,128/2,439,372 = 2,439,372/x
3. Step 3: Cross multiply
   1,131,128x = 2,439,372 × 2,439,372
4. Step 4: Simplify right side
   1,131,128x = 5,950,535,754,384
5. Step 5: Solve for x
   x = 5,950,535,754,384/1,131,128
6. Step 6: Final answer
   x = 5,260,709.45