Finding the Third Proportional to 687,138 and 1,027,548

Step by Step Solution

1. Step 1: Write the proportion equation
   687,138 : 1,027,548 = 1,027,548 : x
2. Step 2: Convert to fraction form
   687,138/1,027,548 = 1,027,548/x
3. Step 3: Cross multiply
   687,138x = 1,027,548 × 1,027,548
4. Step 4: Simplify right side
   687,138x = 1,055,854,892,304
5. Step 5: Solve for x
   x = 1,055,854,892,304/687,138
6. Step 6: Final answer
   x = 1,536,598.02