Finding the Third Proportional to 250.50 and 428.88

Step by Step Solution

1. Step 1: Write the proportion equation
   250.50 : 428.88 = 428.88 : x
2. Step 2: Convert to fraction form
   250.50/428.88 = 428.88/x
3. Step 3: Cross multiply
   250.50x = 428.88 × 428.88
4. Step 4: Simplify right side
   250.50x = 183,933.77
5. Step 5: Solve for x
   x = 183,933.77/250.50
6. Step 6: Final answer
   x = 734.27