Finding the Third Proportional to 3,887,639 and 8,483,844

Step by Step Solution

1. Step 1: Write the proportion equation
   3,887,639 : 8,483,844 = 8,483,844 : x
2. Step 2: Convert to fraction form
   3,887,639/8,483,844 = 8,483,844/x
3. Step 3: Cross multiply
   3,887,639x = 8,483,844 × 8,483,844
4. Step 4: Simplify right side
   3,887,639x = 71,975,609,016,336
5. Step 5: Solve for x
   x = 71,975,609,016,336/3,887,639
6. Step 6: Final answer
   x = 18,513,964.14