Finding the Third Proportional to 67,721 and 105,005

Step by Step Solution

1. Step 1: Write the proportion equation
   67,721 : 105,005 = 105,005 : x
2. Step 2: Convert to fraction form
   67,721/105,005 = 105,005/x
3. Step 3: Cross multiply
   67,721x = 105,005 × 105,005
4. Step 4: Simplify right side
   67,721x = 11,026,050,025
5. Step 5: Solve for x
   x = 11,026,050,025/67,721
6. Step 6: Final answer
   x = 162,815.82