Finding the Third Proportional to 2,215,796 and 4,819,821

Step by Step Solution

1. Step 1: Write the proportion equation
   2,215,796 : 4,819,821 = 4,819,821 : x
2. Step 2: Convert to fraction form
   2,215,796/4,819,821 = 4,819,821/x
3. Step 3: Cross multiply
   2,215,796x = 4,819,821 × 4,819,821
4. Step 4: Simplify right side
   2,215,796x = 23,230,674,472,041
5. Step 5: Solve for x
   x = 23,230,674,472,041/2,215,796
6. Step 6: Final answer
   x = 10,484,121.49