Finding the Third Proportional to 200.34 and 475.55

Step by Step Solution

1. Step 1: Write the proportion equation
   200.34 : 475.55 = 475.55 : x
2. Step 2: Convert to fraction form
   200.34/475.55 = 475.55/x
3. Step 3: Cross multiply
   200.34x = 475.55 × 475.55
4. Step 4: Simplify right side
   200.34x = 226,144.83
5. Step 5: Solve for x
   x = 226,144.83/200.34
6. Step 6: Final answer
   x = 1,128.78