Finding the Third Proportional to 3,939,173 and 8,568,529

Step by Step Solution

1. Step 1: Write the proportion equation
   3,939,173 : 8,568,529 = 8,568,529 : x
2. Step 2: Convert to fraction form
   3,939,173/8,568,529 = 8,568,529/x
3. Step 3: Cross multiply
   3,939,173x = 8,568,529 × 8,568,529
4. Step 4: Simplify right side
   3,939,173x = 73,419,689,223,841
5. Step 5: Solve for x
   x = 73,419,689,223,841/3,939,173
6. Step 6: Final answer
   x = 18,638,351.05