Finding the Third Proportional to 81,236 and 108,669

Step by Step Solution

1. Step 1: Write the proportion equation
   81,236 : 108,669 = 108,669 : x
2. Step 2: Convert to fraction form
   81,236/108,669 = 108,669/x
3. Step 3: Cross multiply
   81,236x = 108,669 × 108,669
4. Step 4: Simplify right side
   81,236x = 11,808,951,561
5. Step 5: Solve for x
   x = 11,808,951,561/81,236
6. Step 6: Final answer
   x = 145,365.99