Finding the Third Proportional to 228,213 and 333,868.50

Step by Step Solution

1. Step 1: Write the proportion equation
   228,213 : 333,868.50 = 333,868.50 : x
2. Step 2: Convert to fraction form
   228,213/333,868.50 = 333,868.50/x
3. Step 3: Cross multiply
   228,213x = 333,868.50 × 333,868.50
4. Step 4: Simplify right side
   228,213x = 111,468,175,292.25
5. Step 5: Solve for x
   x = 111,468,175,292.25/228,213
6. Step 6: Final answer
   x = 488,439.20