Finding the Third Proportional to 67,722 and 137,100

Step by Step Solution

1. Step 1: Write the proportion equation
   67,722 : 137,100 = 137,100 : x
2. Step 2: Convert to fraction form
   67,722/137,100 = 137,100/x
3. Step 3: Cross multiply
   67,722x = 137,100 × 137,100
4. Step 4: Simplify right side
   67,722x = 18,796,410,000
5. Step 5: Solve for x
   x = 18,796,410,000/67,722
6. Step 6: Final answer
   x = 277,552.49