Finding the Third Proportional to 200.18 and 433.69

Step by Step Solution

1. Step 1: Write the proportion equation
   200.18 : 433.69 = 433.69 : x
2. Step 2: Convert to fraction form
   200.18/433.69 = 433.69/x
3. Step 3: Cross multiply
   200.18x = 433.69 × 433.69
4. Step 4: Simplify right side
   200.18x = 188,084.85
5. Step 5: Solve for x
   x = 188,084.85/200.18
6. Step 6: Final answer
   x = 939.58