Finding the Third Proportional to 171,666 and 359,020

Step by Step Solution

1. Step 1: Write the proportion equation
   171,666 : 359,020 = 359,020 : x
2. Step 2: Convert to fraction form
   171,666/359,020 = 359,020/x
3. Step 3: Cross multiply
   171,666x = 359,020 × 359,020
4. Step 4: Simplify right side
   171,666x = 128,895,360,400
5. Step 5: Solve for x
   x = 128,895,360,400/171,666
6. Step 6: Final answer
   x = 750,849.68