Finding the Third Proportional to 284.67 and 373.78

Step by Step Solution

1. Step 1: Write the proportion equation
   284.67 : 373.78 = 373.78 : x
2. Step 2: Convert to fraction form
   284.67/373.78 = 373.78/x
3. Step 3: Cross multiply
   284.67x = 373.78 × 373.78
4. Step 4: Simplify right side
   284.67x = 139,712.42
5. Step 5: Solve for x
   x = 139,712.42/284.67
6. Step 6: Final answer
   x = 490.78