Finding the Third Proportional to 159,718.50 and 349,245

Step by Step Solution

1. Step 1: Write the proportion equation
   159,718.50 : 349,245 = 349,245 : x
2. Step 2: Convert to fraction form
   159,718.50/349,245 = 349,245/x
3. Step 3: Cross multiply
   159,718.50x = 349,245 × 349,245
4. Step 4: Simplify right side
   159,718.50x = 121,972,070,025
5. Step 5: Solve for x
   x = 121,972,070,025/159,718.50
6. Step 6: Final answer
   x = 763,669.02