Finding the Third Proportional to 228,915 and 354,874.50

Step by Step Solution

1. Step 1: Write the proportion equation
   228,915 : 354,874.50 = 354,874.50 : x
2. Step 2: Convert to fraction form
   228,915/354,874.50 = 354,874.50/x
3. Step 3: Cross multiply
   228,915x = 354,874.50 × 354,874.50
4. Step 4: Simplify right side
   228,915x = 125,935,910,750.25
5. Step 5: Solve for x
   x = 125,935,910,750.25/228,915
6. Step 6: Final answer
   x = 550,142.68