Finding the Third Proportional to 99.50 and 179.50

Step by Step Solution

1. Step 1: Write the proportion equation
   99.50 : 179.50 = 179.50 : x
2. Step 2: Convert to fraction form
   99.50/179.50 = 179.50/x
3. Step 3: Cross multiply
   99.50x = 179.50 × 179.50
4. Step 4: Simplify right side
   99.50x = 32,220.25
5. Step 5: Solve for x
   x = 32,220.25/99.50
6. Step 6: Final answer
   x = 323.82