Finding the Third Proportional to 42.47 and 99.84

Step by Step Solution

1. Step 1: Write the proportion equation
   42.47 : 99.84 = 99.84 : x
2. Step 2: Convert to fraction form
   42.47/99.84 = 99.84/x
3. Step 3: Cross multiply
   42.47x = 99.84 × 99.84
4. Step 4: Simplify right side
   42.47x = 9,968.77
5. Step 5: Solve for x
   x = 9,968.77/42.47
6. Step 6: Final answer
   x = 234.73