Finding the Third Proportional to 109.16 and 109.16

Step by Step Solution

1. Step 1: Write the proportion equation
   109.16 : 109.16 = 109.16 : x
2. Step 2: Convert to fraction form
   109.16/109.16 = 109.16/x
3. Step 3: Cross multiply
   109.16x = 109.16 × 109.16
4. Step 4: Simplify right side
   109.16x = 11,915.94
5. Step 5: Solve for x
   x = 11,915.94/109.16
6. Step 6: Final answer
   x = 109.16