Finding the Third Proportional to 196.17 and 418.29

Step by Step Solution

1. Step 1: Write the proportion equation
   196.17 : 418.29 = 418.29 : x
2. Step 2: Convert to fraction form
   196.17/418.29 = 418.29/x
3. Step 3: Cross multiply
   196.17x = 418.29 × 418.29
4. Step 4: Simplify right side
   196.17x = 174,965.74
5. Step 5: Solve for x
   x = 174,965.74/196.17
6. Step 6: Final answer
   x = 891.90