Finding the Third Proportional to 13,198.50 and 20,166.75

Step by Step Solution

1. Step 1: Write the proportion equation
   13,198.50 : 20,166.75 = 20,166.75 : x
2. Step 2: Convert to fraction form
   13,198.50/20,166.75 = 20,166.75/x
3. Step 3: Cross multiply
   13,198.50x = 20,166.75 × 20,166.75
4. Step 4: Simplify right side
   13,198.50x = 406,697,805.56
5. Step 5: Solve for x
   x = 406,697,805.56/13,198.50
6. Step 6: Final answer
   x = 30,813.94