Finding the Third Proportional to 1,620,256 and 3,489,812

Step by Step Solution

1. Step 1: Write the proportion equation
   1,620,256 : 3,489,812 = 3,489,812 : x
2. Step 2: Convert to fraction form
   1,620,256/3,489,812 = 3,489,812/x
3. Step 3: Cross multiply
   1,620,256x = 3,489,812 × 3,489,812
4. Step 4: Simplify right side
   1,620,256x = 12,178,787,795,344
5. Step 5: Solve for x
   x = 12,178,787,795,344/1,620,256
6. Step 6: Final answer
   x = 7,516,582.44