Finding the Third Proportional to 196.31 and 414.28

Step by Step Solution

1. Step 1: Write the proportion equation
   196.31 : 414.28 = 414.28 : x
2. Step 2: Convert to fraction form
   196.31/414.28 = 414.28/x
3. Step 3: Cross multiply
   196.31x = 414.28 × 414.28
4. Step 4: Simplify right side
   196.31x = 171,628.95
5. Step 5: Solve for x
   x = 171,628.95/196.31
6. Step 6: Final answer
   x = 874.26