Finding the Third Proportional to 80,221.50 and 171,831

Step by Step Solution

1. Step 1: Write the proportion equation
   80,221.50 : 171,831 = 171,831 : x
2. Step 2: Convert to fraction form
   80,221.50/171,831 = 171,831/x
3. Step 3: Cross multiply
   80,221.50x = 171,831 × 171,831
4. Step 4: Simplify right side
   80,221.50x = 29,525,892,561
5. Step 5: Solve for x
   x = 29,525,892,561/80,221.50
6. Step 6: Final answer
   x = 368,054.61