Finding the Third Proportional to 2,140,684 and 4,491,555

Step by Step Solution

1. Step 1: Write the proportion equation
   2,140,684 : 4,491,555 = 4,491,555 : x
2. Step 2: Convert to fraction form
   2,140,684/4,491,555 = 4,491,555/x
3. Step 3: Cross multiply
   2,140,684x = 4,491,555 × 4,491,555
4. Step 4: Simplify right side
   2,140,684x = 20,174,066,318,025
5. Step 5: Solve for x
   x = 20,174,066,318,025/2,140,684
6. Step 6: Final answer
   x = 9,424,121.60