Finding the Third Proportional to 1,218,828 and 2,821,200

Step by Step Solution

1. Step 1: Write the proportion equation
   1,218,828 : 2,821,200 = 2,821,200 : x
2. Step 2: Convert to fraction form
   1,218,828/2,821,200 = 2,821,200/x
3. Step 3: Cross multiply
   1,218,828x = 2,821,200 × 2,821,200
4. Step 4: Simplify right side
   1,218,828x = 7,959,169,440,000
5. Step 5: Solve for x
   x = 7,959,169,440,000/1,218,828
6. Step 6: Final answer
   x = 6,530,182.63