Finding the Third Proportional to 716.81 and 1,519.69

Step by Step Solution

1. Step 1: Write the proportion equation
   716.81 : 1,519.69 = 1,519.69 : x
2. Step 2: Convert to fraction form
   716.81/1,519.69 = 1,519.69/x
3. Step 3: Cross multiply
   716.81x = 1,519.69 × 1,519.69
4. Step 4: Simplify right side
   716.81x = 2,309,450.10
5. Step 5: Solve for x
   x = 2,309,450.10/716.81
6. Step 6: Final answer
   x = 3,221.83