Finding the Third Proportional to 687,844 and 1,062,870

Step by Step Solution

1. Step 1: Write the proportion equation
   687,844 : 1,062,870 = 1,062,870 : x
2. Step 2: Convert to fraction form
   687,844/1,062,870 = 1,062,870/x
3. Step 3: Cross multiply
   687,844x = 1,062,870 × 1,062,870
4. Step 4: Simplify right side
   687,844x = 1,129,692,636,900
5. Step 5: Solve for x
   x = 1,129,692,636,900/687,844
6. Step 6: Final answer
   x = 1,642,367.51