Finding the Third Proportional to 9,178 and 13,729

Step by Step Solution

1. Step 1: Write the proportion equation
   9,178 : 13,729 = 13,729 : x
2. Step 2: Convert to fraction form
   9,178/13,729 = 13,729/x
3. Step 3: Cross multiply
   9,178x = 13,729 × 13,729
4. Step 4: Simplify right side
   9,178x = 188,485,441
5. Step 5: Solve for x
   x = 188,485,441/9,178
6. Step 6: Final answer
   x = 20,536.66