Finding the Third Proportional to 228,230 and 333,890

Step by Step Solution

1. Step 1: Write the proportion equation
   228,230 : 333,890 = 333,890 : x
2. Step 2: Convert to fraction form
   228,230/333,890 = 333,890/x
3. Step 3: Cross multiply
   228,230x = 333,890 × 333,890
4. Step 4: Simplify right side
   228,230x = 111,482,532,100
5. Step 5: Solve for x
   x = 111,482,532,100/228,230
6. Step 6: Final answer
   x = 488,465.72