Finding the Third Proportional to 687,020 and 1,038,048

Step by Step Solution

1. Step 1: Write the proportion equation
   687,020 : 1,038,048 = 1,038,048 : x
2. Step 2: Convert to fraction form
   687,020/1,038,048 = 1,038,048/x
3. Step 3: Cross multiply
   687,020x = 1,038,048 × 1,038,048
4. Step 4: Simplify right side
   687,020x = 1,077,543,650,304
5. Step 5: Solve for x
   x = 1,077,543,650,304/687,020
6. Step 6: Final answer
   x = 1,568,431.27