Finding the Third Proportional to 1,331,920 and 2,163,968

Step by Step Solution

1. Step 1: Write the proportion equation
   1,331,920 : 2,163,968 = 2,163,968 : x
2. Step 2: Convert to fraction form
   1,331,920/2,163,968 = 2,163,968/x
3. Step 3: Cross multiply
   1,331,920x = 2,163,968 × 2,163,968
4. Step 4: Simplify right side
   1,331,920x = 4,682,757,505,024
5. Step 5: Solve for x
   x = 4,682,757,505,024/1,331,920
6. Step 6: Final answer
   x = 3,515,794.87