Finding the Third Proportional to 109.56 and 164.06

Step by Step Solution

1. Step 1: Write the proportion equation
   109.56 : 164.06 = 164.06 : x
2. Step 2: Convert to fraction form
   109.56/164.06 = 164.06/x
3. Step 3: Cross multiply
   109.56x = 164.06 × 164.06
4. Step 4: Simplify right side
   109.56x = 26,916.50
5. Step 5: Solve for x
   x = 26,916.50/109.56
6. Step 6: Final answer
   x = 245.67