Finding the Third Proportional to 2,216,821 and 4,765,155

Step by Step Solution

1. Step 1: Write the proportion equation
   2,216,821 : 4,765,155 = 4,765,155 : x
2. Step 2: Convert to fraction form
   2,216,821/4,765,155 = 4,765,155/x
3. Step 3: Cross multiply
   2,216,821x = 4,765,155 × 4,765,155
4. Step 4: Simplify right side
   2,216,821x = 22,706,702,174,025
5. Step 5: Solve for x
   x = 22,706,702,174,025/2,216,821
6. Step 6: Final answer
   x = 10,242,911.89