Finding the Third Proportional to 13,122 and 20,320.88

Step by Step Solution

1. Step 1: Write the proportion equation
   13,122 : 20,320.88 = 20,320.88 : x
2. Step 2: Convert to fraction form
   13,122/20,320.88 = 20,320.88/x
3. Step 3: Cross multiply
   13,122x = 20,320.88 × 20,320.88
4. Step 4: Simplify right side
   13,122x = 412,937,960.77
5. Step 5: Solve for x
   x = 412,937,960.77/13,122
6. Step 6: Final answer
   x = 31,469.13