Finding the Third Proportional to 3,887,640 and 8,483,845

Step by Step Solution

1. Step 1: Write the proportion equation
   3,887,640 : 8,483,845 = 8,483,845 : x
2. Step 2: Convert to fraction form
   3,887,640/8,483,845 = 8,483,845/x
3. Step 3: Cross multiply
   3,887,640x = 8,483,845 × 8,483,845
4. Step 4: Simplify right side
   3,887,640x = 71,975,625,984,025
5. Step 5: Solve for x
   x = 71,975,625,984,025/3,887,640
6. Step 6: Final answer
   x = 18,513,963.74