Finding the Third Proportional to 35.72 and 89.16

Step by Step Solution

1. Step 1: Write the proportion equation
   35.72 : 89.16 = 89.16 : x
2. Step 2: Convert to fraction form
   35.72/89.16 = 89.16/x
3. Step 3: Cross multiply
   35.72x = 89.16 × 89.16
4. Step 4: Simplify right side
   35.72x = 7,948.84
5. Step 5: Solve for x
   x = 7,948.84/35.72
6. Step 6: Final answer
   x = 222.54