Finding the Third Proportional to 164,098.50 and 339,571.50

Step by Step Solution

1. Step 1: Write the proportion equation
   164,098.50 : 339,571.50 = 339,571.50 : x
2. Step 2: Convert to fraction form
   164,098.50/339,571.50 = 339,571.50/x
3. Step 3: Cross multiply
   164,098.50x = 339,571.50 × 339,571.50
4. Step 4: Simplify right side
   164,098.50x = 115,308,803,612.25
5. Step 5: Solve for x
   x = 115,308,803,612.25/164,098.50
6. Step 6: Final answer
   x = 702,680.42