Finding the Third Proportional to 81,558 and 179,172

Step by Step Solution

1. Step 1: Write the proportion equation
   81,558 : 179,172 = 179,172 : x
2. Step 2: Convert to fraction form
   81,558/179,172 = 179,172/x
3. Step 3: Cross multiply
   81,558x = 179,172 × 179,172
4. Step 4: Simplify right side
   81,558x = 32,102,605,584
5. Step 5: Solve for x
   x = 32,102,605,584/81,558
6. Step 6: Final answer
   x = 393,616.88