Finding the Third Proportional to 611,920 and 1,342,040

Step by Step Solution

1. Step 1: Write the proportion equation
   611,920 : 1,342,040 = 1,342,040 : x
2. Step 2: Convert to fraction form
   611,920/1,342,040 = 1,342,040/x
3. Step 3: Cross multiply
   611,920x = 1,342,040 × 1,342,040
4. Step 4: Simplify right side
   611,920x = 1,801,071,361,600
5. Step 5: Solve for x
   x = 1,801,071,361,600/611,920
6. Step 6: Final answer
   x = 2,943,311.81