Finding the Third Proportional to 72,611 and 108,912

Step by Step Solution

1. Step 1: Write the proportion equation
   72,611 : 108,912 = 108,912 : x
2. Step 2: Convert to fraction form
   72,611/108,912 = 108,912/x
3. Step 3: Cross multiply
   72,611x = 108,912 × 108,912
4. Step 4: Simplify right side
   72,611x = 11,861,823,744
5. Step 5: Solve for x
   x = 11,861,823,744/72,611
6. Step 6: Final answer
   x = 163,361.25