Finding the Third Proportional to 90.70 and 214.03

Step by Step Solution

1. Step 1: Write the proportion equation
   90.70 : 214.03 = 214.03 : x
2. Step 2: Convert to fraction form
   90.70/214.03 = 214.03/x
3. Step 3: Cross multiply
   90.70x = 214.03 × 214.03
4. Step 4: Simplify right side
   90.70x = 45,809.38
5. Step 5: Solve for x
   x = 45,809.38/90.70
6. Step 6: Final answer
   x = 505.05