Finding the Third Proportional to 13,392.75 and 20,210.63

Step by Step Solution

1. Step 1: Write the proportion equation
   13,392.75 : 20,210.63 = 20,210.63 : x
2. Step 2: Convert to fraction form
   13,392.75/20,210.63 = 20,210.63/x
3. Step 3: Cross multiply
   13,392.75x = 20,210.63 × 20,210.63
4. Step 4: Simplify right side
   13,392.75x = 408,469,362.89
5. Step 5: Solve for x
   x = 408,469,362.89/13,392.75
6. Step 6: Final answer
   x = 30,499.29