Finding the Third Proportional to 878.50 and 1,036

Step by Step Solution

1. Step 1: Write the proportion equation
   878.50 : 1,036 = 1,036 : x
2. Step 2: Convert to fraction form
   878.50/1,036 = 1,036/x
3. Step 3: Cross multiply
   878.50x = 1,036 × 1,036
4. Step 4: Simplify right side
   878.50x = 1,073,296
5. Step 5: Solve for x
   x = 1,073,296/878.50
6. Step 6: Final answer
   x = 1,221.74