Finding the Third Proportional to 12,842 and 17,355

Step by Step Solution

1. Step 1: Write the proportion equation
   12,842 : 17,355 = 17,355 : x
2. Step 2: Convert to fraction form
   12,842/17,355 = 17,355/x
3. Step 3: Cross multiply
   12,842x = 17,355 × 17,355
4. Step 4: Simplify right side
   12,842x = 301,196,025
5. Step 5: Solve for x
   x = 301,196,025/12,842
6. Step 6: Final answer
   x = 23,453.98