Finding the Third Proportional to 225,262 and 485,300

Step by Step Solution

1. Step 1: Write the proportion equation
   225,262 : 485,300 = 485,300 : x
2. Step 2: Convert to fraction form
   225,262/485,300 = 485,300/x
3. Step 3: Cross multiply
   225,262x = 485,300 × 485,300
4. Step 4: Simplify right side
   225,262x = 235,516,090,000
5. Step 5: Solve for x
   x = 235,516,090,000/225,262
6. Step 6: Final answer
   x = 1,045,520.73