Finding the Third Proportional to 231.89 and 499.88

Step by Step Solution

1. Step 1: Write the proportion equation
   231.89 : 499.88 = 499.88 : x
2. Step 2: Convert to fraction form
   231.89/499.88 = 499.88/x
3. Step 3: Cross multiply
   231.89x = 499.88 × 499.88
4. Step 4: Simplify right side
   231.89x = 249,875.02
5. Step 5: Solve for x
   x = 249,875.02/231.89
6. Step 6: Final answer
   x = 1,077.56