Finding the Third Proportional to 3,820.61 and 8,297.12

Step by Step Solution

1. Step 1: Write the proportion equation
   3,820.61 : 8,297.12 = 8,297.12 : x
2. Step 2: Convert to fraction form
   3,820.61/8,297.12 = 8,297.12/x
3. Step 3: Cross multiply
   3,820.61x = 8,297.12 × 8,297.12
4. Step 4: Simplify right side
   3,820.61x = 68,842,218.44
5. Step 5: Solve for x
   x = 68,842,218.44/3,820.61
6. Step 6: Final answer
   x = 18,018.67