Finding the Third Proportional to 225,216 and 490,608

Step by Step Solution

1. Step 1: Write the proportion equation
   225,216 : 490,608 = 490,608 : x
2. Step 2: Convert to fraction form
   225,216/490,608 = 490,608/x
3. Step 3: Cross multiply
   225,216x = 490,608 × 490,608
4. Step 4: Simplify right side
   225,216x = 240,696,209,664
5. Step 5: Solve for x
   x = 240,696,209,664/225,216
6. Step 6: Final answer
   x = 1,068,734.95