Finding the Third Proportional to 1,821,920 and 2,718,160

Step by Step Solution

1. Step 1: Write the proportion equation
   1,821,920 : 2,718,160 = 2,718,160 : x
2. Step 2: Convert to fraction form
   1,821,920/2,718,160 = 2,718,160/x
3. Step 3: Cross multiply
   1,821,920x = 2,718,160 × 2,718,160
4. Step 4: Simplify right side
   1,821,920x = 7,388,393,785,600
5. Step 5: Solve for x
   x = 7,388,393,785,600/1,821,920
6. Step 6: Final answer
   x = 4,055,278.93