Finding the Third Proportional to 290.94 and 443.05

Step by Step Solution

1. Step 1: Write the proportion equation
   290.94 : 443.05 = 443.05 : x
2. Step 2: Convert to fraction form
   290.94/443.05 = 443.05/x
3. Step 3: Cross multiply
   290.94x = 443.05 × 443.05
4. Step 4: Simplify right side
   290.94x = 196,291.40
5. Step 5: Solve for x
   x = 196,291.40/290.94
6. Step 6: Final answer
   x = 674.69