Finding the Third Proportional to 639,732 and 1,368,048

Step by Step Solution

1. Step 1: Write the proportion equation
   639,732 : 1,368,048 = 1,368,048 : x
2. Step 2: Convert to fraction form
   639,732/1,368,048 = 1,368,048/x
3. Step 3: Cross multiply
   639,732x = 1,368,048 × 1,368,048
4. Step 4: Simplify right side
   639,732x = 1,871,555,330,304
5. Step 5: Solve for x
   x = 1,871,555,330,304/639,732
6. Step 6: Final answer
   x = 2,925,530.27