Finding the Third Proportional to 2,215,817 and 4,819,858

Step by Step Solution

1. Step 1: Write the proportion equation
   2,215,817 : 4,819,858 = 4,819,858 : x
2. Step 2: Convert to fraction form
   2,215,817/4,819,858 = 4,819,858/x
3. Step 3: Cross multiply
   2,215,817x = 4,819,858 × 4,819,858
4. Step 4: Simplify right side
   2,215,817x = 23,231,031,140,164
5. Step 5: Solve for x
   x = 23,231,031,140,164/2,215,817
6. Step 6: Final answer
   x = 10,484,183.10