Finding the Third Proportional to 72,276 and 111,231

Step by Step Solution

1. Step 1: Write the proportion equation
   72,276 : 111,231 = 111,231 : x
2. Step 2: Convert to fraction form
   72,276/111,231 = 111,231/x
3. Step 3: Cross multiply
   72,276x = 111,231 × 111,231
4. Step 4: Simplify right side
   72,276x = 12,372,335,361
5. Step 5: Solve for x
   x = 12,372,335,361/72,276
6. Step 6: Final answer
   x = 171,181.79