Finding the Third Proportional to 89.72 and 187.03

Step by Step Solution

1. Step 1: Write the proportion equation
   89.72 : 187.03 = 187.03 : x
2. Step 2: Convert to fraction form
   89.72/187.03 = 187.03/x
3. Step 3: Cross multiply
   89.72x = 187.03 × 187.03
4. Step 4: Simplify right side
   89.72x = 34,980.69
5. Step 5: Solve for x
   x = 34,980.69/89.72
6. Step 6: Final answer
   x = 389.89