Finding the Third Proportional to 100.62 and 218.32

Step by Step Solution

1. Step 1: Write the proportion equation
   100.62 : 218.32 = 218.32 : x
2. Step 2: Convert to fraction form
   100.62/218.32 = 218.32/x
3. Step 3: Cross multiply
   100.62x = 218.32 × 218.32
4. Step 4: Simplify right side
   100.62x = 47,663.76
5. Step 5: Solve for x
   x = 47,663.76/100.62
6. Step 6: Final answer
   x = 473.71