Finding the Third Proportional to 72,326 and 111,979

Step by Step Solution

1. Step 1: Write the proportion equation
   72,326 : 111,979 = 111,979 : x
2. Step 2: Convert to fraction form
   72,326/111,979 = 111,979/x
3. Step 3: Cross multiply
   72,326x = 111,979 × 111,979
4. Step 4: Simplify right side
   72,326x = 12,539,296,441
5. Step 5: Solve for x
   x = 12,539,296,441/72,326
6. Step 6: Final answer
   x = 173,371.91