Finding the Third Proportional to 171,969.75 and 356,089.50

Step by Step Solution

1. Step 1: Write the proportion equation
   171,969.75 : 356,089.50 = 356,089.50 : x
2. Step 2: Convert to fraction form
   171,969.75/356,089.50 = 356,089.50/x
3. Step 3: Cross multiply
   171,969.75x = 356,089.50 × 356,089.50
4. Step 4: Simplify right side
   171,969.75x = 126,799,732,010.25
5. Step 5: Solve for x
   x = 126,799,732,010.25/171,969.75
6. Step 6: Final answer
   x = 737,337.42