Finding the Third Proportional to 81,109 and 108,494

Step by Step Solution

1. Step 1: Write the proportion equation
   81,109 : 108,494 = 108,494 : x
2. Step 2: Convert to fraction form
   81,109/108,494 = 108,494/x
3. Step 3: Cross multiply
   81,109x = 108,494 × 108,494
4. Step 4: Simplify right side
   81,109x = 11,770,948,036
5. Step 5: Solve for x
   x = 11,770,948,036/81,109
6. Step 6: Final answer
   x = 145,125.05