Finding the Third Proportional to 81,238 and 108,672

Step by Step Solution

1. Step 1: Write the proportion equation
   81,238 : 108,672 = 108,672 : x
2. Step 2: Convert to fraction form
   81,238/108,672 = 108,672/x
3. Step 3: Cross multiply
   81,238x = 108,672 × 108,672
4. Step 4: Simplify right side
   81,238x = 11,809,603,584
5. Step 5: Solve for x
   x = 11,809,603,584/81,238
6. Step 6: Final answer
   x = 145,370.44