Finding the Third Proportional to 13,505 and 20,550

Step by Step Solution

1. Step 1: Write the proportion equation
   13,505 : 20,550 = 20,550 : x
2. Step 2: Convert to fraction form
   13,505/20,550 = 20,550/x
3. Step 3: Cross multiply
   13,505x = 20,550 × 20,550
4. Step 4: Simplify right side
   13,505x = 422,302,500
5. Step 5: Solve for x
   x = 422,302,500/13,505
6. Step 6: Final answer
   x = 31,270.09