Finding the Third Proportional to 72.50 and 196

Step by Step Solution

1. Step 1: Write the proportion equation
   72.50 : 196 = 196 : x
2. Step 2: Convert to fraction form
   72.50/196 = 196/x
3. Step 3: Cross multiply
   72.50x = 196 × 196
4. Step 4: Simplify right side
   72.50x = 38,416
5. Step 5: Solve for x
   x = 38,416/72.50
6. Step 6: Final answer
   x = 529.88