Finding the Third Proportional to 72.84 and 112.08

Step by Step Solution

1. Step 1: Write the proportion equation
   72.84 : 112.08 = 112.08 : x
2. Step 2: Convert to fraction form
   72.84/112.08 = 112.08/x
3. Step 3: Cross multiply
   72.84x = 112.08 × 112.08
4. Step 4: Simplify right side
   72.84x = 12,561.51
5. Step 5: Solve for x
   x = 12,561.51/72.84
6. Step 6: Final answer
   x = 172.44