Finding the Third Proportional to 253,055 and 378,880.50

Step by Step Solution

1. Step 1: Write the proportion equation
   253,055 : 378,880.50 = 378,880.50 : x
2. Step 2: Convert to fraction form
   253,055/378,880.50 = 378,880.50/x
3. Step 3: Cross multiply
   253,055x = 378,880.50 × 378,880.50
4. Step 4: Simplify right side
   253,055x = 143,550,433,280.25
5. Step 5: Solve for x
   x = 143,550,433,280.25/253,055
6. Step 6: Final answer
   x = 567,269.70