Finding the Third Proportional to 211.78 and 448.03

Step by Step Solution

1. Step 1: Write the proportion equation
   211.78 : 448.03 = 448.03 : x
2. Step 2: Convert to fraction form
   211.78/448.03 = 448.03/x
3. Step 3: Cross multiply
   211.78x = 448.03 × 448.03
4. Step 4: Simplify right side
   211.78x = 200,732.00
5. Step 5: Solve for x
   x = 200,732.00/211.78
6. Step 6: Final answer
   x = 947.83