Finding the Third Proportional to 401.34 and 868.22

Step by Step Solution

1. Step 1: Write the proportion equation
   401.34 : 868.22 = 868.22 : x
2. Step 2: Convert to fraction form
   401.34/868.22 = 868.22/x
3. Step 3: Cross multiply
   401.34x = 868.22 × 868.22
4. Step 4: Simplify right side
   401.34x = 753,803.80
5. Step 5: Solve for x
   x = 753,803.80/401.34
6. Step 6: Final answer
   x = 1,878.20