Finding the Third Proportional to 1,268,228 and 2,641,216

Step by Step Solution

1. Step 1: Write the proportion equation
   1,268,228 : 2,641,216 = 2,641,216 : x
2. Step 2: Convert to fraction form
   1,268,228/2,641,216 = 2,641,216/x
3. Step 3: Cross multiply
   1,268,228x = 2,641,216 × 2,641,216
4. Step 4: Simplify right side
   1,268,228x = 6,976,021,958,656
5. Step 5: Solve for x
   x = 6,976,021,958,656/1,268,228
6. Step 6: Final answer
   x = 5,500,605.54