Finding the Third Proportional to 171,192 and 257,305.50

Step by Step Solution

1. Step 1: Write the proportion equation
   171,192 : 257,305.50 = 257,305.50 : x
2. Step 2: Convert to fraction form
   171,192/257,305.50 = 257,305.50/x
3. Step 3: Cross multiply
   171,192x = 257,305.50 × 257,305.50
4. Step 4: Simplify right side
   171,192x = 66,206,120,330.25
5. Step 5: Solve for x
   x = 66,206,120,330.25/171,192
6. Step 6: Final answer
   x = 386,736.06