Finding the Third Proportional to 486,990 and 1,067,380

Step by Step Solution

1. Step 1: Write the proportion equation
   486,990 : 1,067,380 = 1,067,380 : x
2. Step 2: Convert to fraction form
   486,990/1,067,380 = 1,067,380/x
3. Step 3: Cross multiply
   486,990x = 1,067,380 × 1,067,380
4. Step 4: Simplify right side
   486,990x = 1,139,300,064,400
5. Step 5: Solve for x
   x = 1,139,300,064,400/486,990
6. Step 6: Final answer
   x = 2,339,473.22