Finding the Third Proportional to 638,986 and 1,367,750

Step by Step Solution

1. Step 1: Write the proportion equation
   638,986 : 1,367,750 = 1,367,750 : x
2. Step 2: Convert to fraction form
   638,986/1,367,750 = 1,367,750/x
3. Step 3: Cross multiply
   638,986x = 1,367,750 × 1,367,750
4. Step 4: Simplify right side
   638,986x = 1,870,740,062,500
5. Step 5: Solve for x
   x = 1,870,740,062,500/638,986
6. Step 6: Final answer
   x = 2,927,669.87