Finding the Third Proportional to 13,501 and 21,131

Step by Step Solution

1. Step 1: Write the proportion equation
   13,501 : 21,131 = 21,131 : x
2. Step 2: Convert to fraction form
   13,501/21,131 = 21,131/x
3. Step 3: Cross multiply
   13,501x = 21,131 × 21,131
4. Step 4: Simplify right side
   13,501x = 446,519,161
5. Step 5: Solve for x
   x = 446,519,161/13,501
6. Step 6: Final answer
   x = 33,073.04