Finding the Third Proportional to 42.25 and 99.63

Step by Step Solution

1. Step 1: Write the proportion equation
   42.25 : 99.63 = 99.63 : x
2. Step 2: Convert to fraction form
   42.25/99.63 = 99.63/x
3. Step 3: Cross multiply
   42.25x = 99.63 × 99.63
4. Step 4: Simplify right side
   42.25x = 9,925.14
5. Step 5: Solve for x
   x = 9,925.14/42.25
6. Step 6: Final answer
   x = 234.91