Finding the Third Proportional to 757,728 and 1,131,408

Step by Step Solution

1. Step 1: Write the proportion equation
   757,728 : 1,131,408 = 1,131,408 : x
2. Step 2: Convert to fraction form
   757,728/1,131,408 = 1,131,408/x
3. Step 3: Cross multiply
   757,728x = 1,131,408 × 1,131,408
4. Step 4: Simplify right side
   757,728x = 1,280,084,062,464
5. Step 5: Solve for x
   x = 1,280,084,062,464/757,728
6. Step 6: Final answer
   x = 1,689,371.47