Finding the Third Proportional to 164,119.50 and 339,619.50

Step by Step Solution

1. Step 1: Write the proportion equation
   164,119.50 : 339,619.50 = 339,619.50 : x
2. Step 2: Convert to fraction form
   164,119.50/339,619.50 = 339,619.50/x
3. Step 3: Cross multiply
   164,119.50x = 339,619.50 × 339,619.50
4. Step 4: Simplify right side
   164,119.50x = 115,341,404,780.25
5. Step 5: Solve for x
   x = 115,341,404,780.25/164,119.50
6. Step 6: Final answer
   x = 702,789.16