Finding the Third Proportional to 13,018.50 and 20,961

Step by Step Solution

1. Step 1: Write the proportion equation
   13,018.50 : 20,961 = 20,961 : x
2. Step 2: Convert to fraction form
   13,018.50/20,961 = 20,961/x
3. Step 3: Cross multiply
   13,018.50x = 20,961 × 20,961
4. Step 4: Simplify right side
   13,018.50x = 439,363,521
5. Step 5: Solve for x
   x = 439,363,521/13,018.50
6. Step 6: Final answer
   x = 33,749.17