Finding the Third Proportional to 72,330 and 108,109

Step by Step Solution

1. Step 1: Write the proportion equation
   72,330 : 108,109 = 108,109 : x
2. Step 2: Convert to fraction form
   72,330/108,109 = 108,109/x
3. Step 3: Cross multiply
   72,330x = 108,109 × 108,109
4. Step 4: Simplify right side
   72,330x = 11,687,555,881
5. Step 5: Solve for x
   x = 11,687,555,881/72,330
6. Step 6: Final answer
   x = 161,586.56