Finding the Third Proportional to 627,546 and 1,288,464

Step by Step Solution

1. Step 1: Write the proportion equation
   627,546 : 1,288,464 = 1,288,464 : x
2. Step 2: Convert to fraction form
   627,546/1,288,464 = 1,288,464/x
3. Step 3: Cross multiply
   627,546x = 1,288,464 × 1,288,464
4. Step 4: Simplify right side
   627,546x = 1,660,139,479,296
5. Step 5: Solve for x
   x = 1,660,139,479,296/627,546
6. Step 6: Final answer
   x = 2,645,446.68