Finding the Third Proportional to 1,718,920 and 3,642,738

Step by Step Solution

1. Step 1: Write the proportion equation
   1,718,920 : 3,642,738 = 3,642,738 : x
2. Step 2: Convert to fraction form
   1,718,920/3,642,738 = 3,642,738/x
3. Step 3: Cross multiply
   1,718,920x = 3,642,738 × 3,642,738
4. Step 4: Simplify right side
   1,718,920x = 13,269,540,136,644
5. Step 5: Solve for x
   x = 13,269,540,136,644/1,718,920
6. Step 6: Final answer
   x = 7,719,696.17