Finding the Third Proportional to 225,258 and 485,292

Step by Step Solution

1. Step 1: Write the proportion equation
   225,258 : 485,292 = 485,292 : x
2. Step 2: Convert to fraction form
   225,258/485,292 = 485,292/x
3. Step 3: Cross multiply
   225,258x = 485,292 × 485,292
4. Step 4: Simplify right side
   225,258x = 235,508,325,264
5. Step 5: Solve for x
   x = 235,508,325,264/225,258
6. Step 6: Final answer
   x = 1,045,504.82