Finding the Third Proportional to 530.09 and 800.69

Step by Step Solution

1. Step 1: Write the proportion equation
   530.09 : 800.69 = 800.69 : x
2. Step 2: Convert to fraction form
   530.09/800.69 = 800.69/x
3. Step 3: Cross multiply
   530.09x = 800.69 × 800.69
4. Step 4: Simplify right side
   530.09x = 641,100.47
5. Step 5: Solve for x
   x = 641,100.47/530.09
6. Step 6: Final answer
   x = 1,209.41