Finding the Third Proportional to 99.83 and 211.52

Step by Step Solution

1. Step 1: Write the proportion equation
   99.83 : 211.52 = 211.52 : x
2. Step 2: Convert to fraction form
   99.83/211.52 = 211.52/x
3. Step 3: Cross multiply
   99.83x = 211.52 × 211.52
4. Step 4: Simplify right side
   99.83x = 44,739.69
5. Step 5: Solve for x
   x = 44,739.69/99.83
6. Step 6: Final answer
   x = 448.18