Finding the Third Proportional to 3,939,175 and 8,568,534

Step by Step Solution

1. Step 1: Write the proportion equation
   3,939,175 : 8,568,534 = 8,568,534 : x
2. Step 2: Convert to fraction form
   3,939,175/8,568,534 = 8,568,534/x
3. Step 3: Cross multiply
   3,939,175x = 8,568,534 × 8,568,534
4. Step 4: Simplify right side
   3,939,175x = 73,419,774,909,156
5. Step 5: Solve for x
   x = 73,419,774,909,156/3,939,175
6. Step 6: Final answer
   x = 18,638,363.34