Finding the Third Proportional to 164,200.50 and 253,550.25

Step by Step Solution

1. Step 1: Write the proportion equation
   164,200.50 : 253,550.25 = 253,550.25 : x
2. Step 2: Convert to fraction form
   164,200.50/253,550.25 = 253,550.25/x
3. Step 3: Cross multiply
   164,200.50x = 253,550.25 × 253,550.25
4. Step 4: Simplify right side
   164,200.50x = 64,287,729,275.06
5. Step 5: Solve for x
   x = 64,287,729,275.06/164,200.50
6. Step 6: Final answer
   x = 391,519.69