Finding the Third Proportional to 225,055 and 318,441.50

Step by Step Solution

1. Step 1: Write the proportion equation
   225,055 : 318,441.50 = 318,441.50 : x
2. Step 2: Convert to fraction form
   225,055/318,441.50 = 318,441.50/x
3. Step 3: Cross multiply
   225,055x = 318,441.50 × 318,441.50
4. Step 4: Simplify right side
   225,055x = 101,404,988,922.25
5. Step 5: Solve for x
   x = 101,404,988,922.25/225,055
6. Step 6: Final answer
   x = 450,578.70