Finding the Third Proportional to 170,689.50 and 352,404.50

Step by Step Solution

1. Step 1: Write the proportion equation
   170,689.50 : 352,404.50 = 352,404.50 : x
2. Step 2: Convert to fraction form
   170,689.50/352,404.50 = 352,404.50/x
3. Step 3: Cross multiply
   170,689.50x = 352,404.50 × 352,404.50
4. Step 4: Simplify right side
   170,689.50x = 124,188,931,620.25
5. Step 5: Solve for x
   x = 124,188,931,620.25/170,689.50
6. Step 6: Final answer
   x = 727,572.18