Finding the Third Proportional to 12,200 and 19,500

Step by Step Solution

1. Step 1: Write the proportion equation
   12,200 : 19,500 = 19,500 : x
2. Step 2: Convert to fraction form
   12,200/19,500 = 19,500/x
3. Step 3: Cross multiply
   12,200x = 19,500 × 19,500
4. Step 4: Simplify right side
   12,200x = 380,250,000
5. Step 5: Solve for x
   x = 380,250,000/12,200
6. Step 6: Final answer
   x = 31,168.03