Finding the Third Proportional to 628,692 and 1,286,436

Step by Step Solution

1. Step 1: Write the proportion equation
   628,692 : 1,286,436 = 1,286,436 : x
2. Step 2: Convert to fraction form
   628,692/1,286,436 = 1,286,436/x
3. Step 3: Cross multiply
   628,692x = 1,286,436 × 1,286,436
4. Step 4: Simplify right side
   628,692x = 1,654,917,582,096
5. Step 5: Solve for x
   x = 1,654,917,582,096/628,692
6. Step 6: Final answer
   x = 2,632,318.50