Finding the Third Proportional to 554.81 and 853.83

Step by Step Solution

1. Step 1: Write the proportion equation
   554.81 : 853.83 = 853.83 : x
2. Step 2: Convert to fraction form
   554.81/853.83 = 853.83/x
3. Step 3: Cross multiply
   554.81x = 853.83 × 853.83
4. Step 4: Simplify right side
   554.81x = 729,022.47
5. Step 5: Solve for x
   x = 729,022.47/554.81
6. Step 6: Final answer
   x = 1,314.00