Finding the Third Proportional to 865.69 and 892.69

Step by Step Solution

1. Step 1: Write the proportion equation
   865.69 : 892.69 = 892.69 : x
2. Step 2: Convert to fraction form
   865.69/892.69 = 892.69/x
3. Step 3: Cross multiply
   865.69x = 892.69 × 892.69
4. Step 4: Simplify right side
   865.69x = 796,890.97
5. Step 5: Solve for x
   x = 796,890.97/865.69
6. Step 6: Final answer
   x = 920.53