Finding the Third Proportional to 499.69 and 710.72

Step by Step Solution

1. Step 1: Write the proportion equation
   499.69 : 710.72 = 710.72 : x
2. Step 2: Convert to fraction form
   499.69/710.72 = 710.72/x
3. Step 3: Cross multiply
   499.69x = 710.72 × 710.72
4. Step 4: Simplify right side
   499.69x = 505,121.14
5. Step 5: Solve for x
   x = 505,121.14/499.69
6. Step 6: Final answer
   x = 1,010.87