Finding the Third Proportional to 1,131,144 and 2,439,408

Step by Step Solution

1. Step 1: Write the proportion equation
   1,131,144 : 2,439,408 = 2,439,408 : x
2. Step 2: Convert to fraction form
   1,131,144/2,439,408 = 2,439,408/x
3. Step 3: Cross multiply
   1,131,144x = 2,439,408 × 2,439,408
4. Step 4: Simplify right side
   1,131,144x = 5,950,711,390,464
5. Step 5: Solve for x
   x = 5,950,711,390,464/1,131,144
6. Step 6: Final answer
   x = 5,260,790.31