Finding the Third Proportional to 687,015 and 1,038,042

Step by Step Solution

1. Step 1: Write the proportion equation
   687,015 : 1,038,042 = 1,038,042 : x
2. Step 2: Convert to fraction form
   687,015/1,038,042 = 1,038,042/x
3. Step 3: Cross multiply
   687,015x = 1,038,042 × 1,038,042
4. Step 4: Simplify right side
   687,015x = 1,077,531,193,764
5. Step 5: Solve for x
   x = 1,077,531,193,764/687,015
6. Step 6: Final answer
   x = 1,568,424.55