Finding the Third Proportional to 225,716 and 485,416

Step by Step Solution

1. Step 1: Write the proportion equation
   225,716 : 485,416 = 485,416 : x
2. Step 2: Convert to fraction form
   225,716/485,416 = 485,416/x
3. Step 3: Cross multiply
   225,716x = 485,416 × 485,416
4. Step 4: Simplify right side
   225,716x = 235,628,693,056
5. Step 5: Solve for x
   x = 235,628,693,056/225,716
6. Step 6: Final answer
   x = 1,043,916.66