Finding the Third Proportional to 3,939,174 and 8,568,532

Step by Step Solution

1. Step 1: Write the proportion equation
   3,939,174 : 8,568,532 = 8,568,532 : x
2. Step 2: Convert to fraction form
   3,939,174/8,568,532 = 8,568,532/x
3. Step 3: Cross multiply
   3,939,174x = 8,568,532 × 8,568,532
4. Step 4: Simplify right side
   3,939,174x = 73,419,740,635,024
5. Step 5: Solve for x
   x = 73,419,740,635,024/3,939,174
6. Step 6: Final answer
   x = 18,638,359.37