Finding the Third Proportional to 214.10 and 443.39

Step by Step Solution

1. Step 1: Write the proportion equation
   214.10 : 443.39 = 443.39 : x
2. Step 2: Convert to fraction form
   214.10/443.39 = 443.39/x
3. Step 3: Cross multiply
   214.10x = 443.39 × 443.39
4. Step 4: Simplify right side
   214.10x = 196,595.25
5. Step 5: Solve for x
   x = 196,595.25/214.10
6. Step 6: Final answer
   x = 918.23