Finding the Third Proportional to 8,861 and 13,712

Step by Step Solution

1. Step 1: Write the proportion equation
   8,861 : 13,712 = 13,712 : x
2. Step 2: Convert to fraction form
   8,861/13,712 = 13,712/x
3. Step 3: Cross multiply
   8,861x = 13,712 × 13,712
4. Step 4: Simplify right side
   8,861x = 188,018,944
5. Step 5: Solve for x
   x = 188,018,944/8,861
6. Step 6: Final answer
   x = 21,218.70