Finding the Third Proportional to 628,676 and 1,286,404

Step by Step Solution

1. Step 1: Write the proportion equation
   628,676 : 1,286,404 = 1,286,404 : x
2. Step 2: Convert to fraction form
   628,676/1,286,404 = 1,286,404/x
3. Step 3: Cross multiply
   628,676x = 1,286,404 × 1,286,404
4. Step 4: Simplify right side
   628,676x = 1,654,835,251,216
5. Step 5: Solve for x
   x = 1,654,835,251,216/628,676
6. Step 6: Final answer
   x = 2,632,254.53