Finding the Third Proportional to 396.38 and 904.69

Step by Step Solution

1. Step 1: Write the proportion equation
   396.38 : 904.69 = 904.69 : x
2. Step 2: Convert to fraction form
   396.38/904.69 = 904.69/x
3. Step 3: Cross multiply
   396.38x = 904.69 × 904.69
4. Step 4: Simplify right side
   396.38x = 818,459.47
5. Step 5: Solve for x
   x = 818,459.47/396.38
6. Step 6: Final answer
   x = 2,064.86