Finding the Third Proportional to 628,698 and 1,286,448

Step by Step Solution

1. Step 1: Write the proportion equation
   628,698 : 1,286,448 = 1,286,448 : x
2. Step 2: Convert to fraction form
   628,698/1,286,448 = 1,286,448/x
3. Step 3: Cross multiply
   628,698x = 1,286,448 × 1,286,448
4. Step 4: Simplify right side
   628,698x = 1,654,948,456,704
5. Step 5: Solve for x
   x = 1,654,948,456,704/628,698
6. Step 6: Final answer
   x = 2,632,342.49