Finding the Third Proportional to 2,140,768 and 4,491,688

Step by Step Solution

1. Step 1: Write the proportion equation
   2,140,768 : 4,491,688 = 4,491,688 : x
2. Step 2: Convert to fraction form
   2,140,768/4,491,688 = 4,491,688/x
3. Step 3: Cross multiply
   2,140,768x = 4,491,688 × 4,491,688
4. Step 4: Simplify right side
   2,140,768x = 20,175,261,089,344
5. Step 5: Solve for x
   x = 20,175,261,089,344/2,140,768
6. Step 6: Final answer
   x = 9,424,309.92