Finding the Third Proportional to 1,180,878 and 1,879,920

Step by Step Solution

1. Step 1: Write the proportion equation
   1,180,878 : 1,879,920 = 1,879,920 : x
2. Step 2: Convert to fraction form
   1,180,878/1,879,920 = 1,879,920/x
3. Step 3: Cross multiply
   1,180,878x = 1,879,920 × 1,879,920
4. Step 4: Simplify right side
   1,180,878x = 3,534,099,206,400
5. Step 5: Solve for x
   x = 3,534,099,206,400/1,180,878
6. Step 6: Final answer
   x = 2,992,772.50