Finding the Third Proportional to 170,389.50 and 351,705

Step by Step Solution

1. Step 1: Write the proportion equation
   170,389.50 : 351,705 = 351,705 : x
2. Step 2: Convert to fraction form
   170,389.50/351,705 = 351,705/x
3. Step 3: Cross multiply
   170,389.50x = 351,705 × 351,705
4. Step 4: Simplify right side
   170,389.50x = 123,696,407,025
5. Step 5: Solve for x
   x = 123,696,407,025/170,389.50
6. Step 6: Final answer
   x = 725,962.62