Finding the Third Proportional to 687,972 and 1,062,630

Step by Step Solution

1. Step 1: Write the proportion equation
   687,972 : 1,062,630 = 1,062,630 : x
2. Step 2: Convert to fraction form
   687,972/1,062,630 = 1,062,630/x
3. Step 3: Cross multiply
   687,972x = 1,062,630 × 1,062,630
4. Step 4: Simplify right side
   687,972x = 1,129,182,516,900
5. Step 5: Solve for x
   x = 1,129,182,516,900/687,972
6. Step 6: Final answer
   x = 1,641,320.46