Finding the Third Proportional to 1,728,920 and 2,777,912

Step by Step Solution

1. Step 1: Write the proportion equation
   1,728,920 : 2,777,912 = 2,777,912 : x
2. Step 2: Convert to fraction form
   1,728,920/2,777,912 = 2,777,912/x
3. Step 3: Cross multiply
   1,728,920x = 2,777,912 × 2,777,912
4. Step 4: Simplify right side
   1,728,920x = 7,716,795,079,744
5. Step 5: Solve for x
   x = 7,716,795,079,744/1,728,920
6. Step 6: Final answer
   x = 4,463,361.57