Finding the Third Proportional to 688.82 and 1,499.13

Step by Step Solution

1. Step 1: Write the proportion equation
   688.82 : 1,499.13 = 1,499.13 : x
2. Step 2: Convert to fraction form
   688.82/1,499.13 = 1,499.13/x
3. Step 3: Cross multiply
   688.82x = 1,499.13 × 1,499.13
4. Step 4: Simplify right side
   688.82x = 2,247,399.19
5. Step 5: Solve for x
   x = 2,247,399.19/688.82
6. Step 6: Final answer
   x = 3,262.70