Finding the Third Proportional to 228,172 and 485,900

Step by Step Solution

1. Step 1: Write the proportion equation
   228,172 : 485,900 = 485,900 : x
2. Step 2: Convert to fraction form
   228,172/485,900 = 485,900/x
3. Step 3: Cross multiply
   228,172x = 485,900 × 485,900
4. Step 4: Simplify right side
   228,172x = 236,098,810,000
5. Step 5: Solve for x
   x = 236,098,810,000/228,172
6. Step 6: Final answer
   x = 1,034,740.50