Finding the Third Proportional to 3,887,638 and 8,483,841

Step by Step Solution

1. Step 1: Write the proportion equation
   3,887,638 : 8,483,841 = 8,483,841 : x
2. Step 2: Convert to fraction form
   3,887,638/8,483,841 = 8,483,841/x
3. Step 3: Cross multiply
   3,887,638x = 8,483,841 × 8,483,841
4. Step 4: Simplify right side
   3,887,638x = 71,975,558,113,281
5. Step 5: Solve for x
   x = 71,975,558,113,281/3,887,638
6. Step 6: Final answer
   x = 18,513,955.80