Finding the Third Proportional to 104.25 and 216.94

Step by Step Solution

1. Step 1: Write the proportion equation
   104.25 : 216.94 = 216.94 : x
2. Step 2: Convert to fraction form
   104.25/216.94 = 216.94/x
3. Step 3: Cross multiply
   104.25x = 216.94 × 216.94
4. Step 4: Simplify right side
   104.25x = 47,061.88
5. Step 5: Solve for x
   x = 47,061.88/104.25
6. Step 6: Final answer
   x = 451.43