Finding the Third Proportional to 2,221,638 and 4,600,812

Step by Step Solution

1. Step 1: Write the proportion equation
   2,221,638 : 4,600,812 = 4,600,812 : x
2. Step 2: Convert to fraction form
   2,221,638/4,600,812 = 4,600,812/x
3. Step 3: Cross multiply
   2,221,638x = 4,600,812 × 4,600,812
4. Step 4: Simplify right side
   2,221,638x = 21,167,471,059,344
5. Step 5: Solve for x
   x = 21,167,471,059,344/2,221,638
6. Step 6: Final answer
   x = 9,527,866.85