Finding the Third Proportional to 13,122.56 and 20,169.84

Step by Step Solution

1. Step 1: Write the proportion equation
   13,122.56 : 20,169.84 = 20,169.84 : x
2. Step 2: Convert to fraction form
   13,122.56/20,169.84 = 20,169.84/x
3. Step 3: Cross multiply
   13,122.56x = 20,169.84 × 20,169.84
4. Step 4: Simplify right side
   13,122.56x = 406,822,596.90
5. Step 5: Solve for x
   x = 406,822,596.90/13,122.56
6. Step 6: Final answer
   x = 31,001.76