Finding the Third Proportional to 3,939,515 and 8,467,546

Step by Step Solution

1. Step 1: Write the proportion equation
   3,939,515 : 8,467,546 = 8,467,546 : x
2. Step 2: Convert to fraction form
   3,939,515/8,467,546 = 8,467,546/x
3. Step 3: Cross multiply
   3,939,515x = 8,467,546 × 8,467,546
4. Step 4: Simplify right side
   3,939,515x = 71,699,335,262,116
5. Step 5: Solve for x
   x = 71,699,335,262,116/3,939,515
6. Step 6: Final answer
   x = 18,200,041.19