Finding the Third Proportional to 99.38 and 215.44

Step by Step Solution

1. Step 1: Write the proportion equation
   99.38 : 215.44 = 215.44 : x
2. Step 2: Convert to fraction form
   99.38/215.44 = 215.44/x
3. Step 3: Cross multiply
   99.38x = 215.44 × 215.44
4. Step 4: Simplify right side
   99.38x = 46,413.32
5. Step 5: Solve for x
   x = 46,413.32/99.38
6. Step 6: Final answer
   x = 467.05