Finding the Third Proportional to 627,548 and 1,288,468

Step by Step Solution

1. Step 1: Write the proportion equation
   627,548 : 1,288,468 = 1,288,468 : x
2. Step 2: Convert to fraction form
   627,548/1,288,468 = 1,288,468/x
3. Step 3: Cross multiply
   627,548x = 1,288,468 × 1,288,468
4. Step 4: Simplify right side
   627,548x = 1,660,149,787,024
5. Step 5: Solve for x
   x = 1,660,149,787,024/627,548
6. Step 6: Final answer
   x = 2,645,454.67