Finding the Third Proportional to 118.50 and 236.25

Step by Step Solution

1. Step 1: Write the proportion equation
   118.50 : 236.25 = 236.25 : x
2. Step 2: Convert to fraction form
   118.50/236.25 = 236.25/x
3. Step 3: Cross multiply
   118.50x = 236.25 × 236.25
4. Step 4: Simplify right side
   118.50x = 55,814.06
5. Step 5: Solve for x
   x = 55,814.06/118.50
6. Step 6: Final answer
   x = 471.00