Finding the Third Proportional to 228,978 and 335,263.50

Step by Step Solution

1. Step 1: Write the proportion equation
   228,978 : 335,263.50 = 335,263.50 : x
2. Step 2: Convert to fraction form
   228,978/335,263.50 = 335,263.50/x
3. Step 3: Cross multiply
   228,978x = 335,263.50 × 335,263.50
4. Step 4: Simplify right side
   228,978x = 112,401,614,432.25
5. Step 5: Solve for x
   x = 112,401,614,432.25/228,978
6. Step 6: Final answer
   x = 490,883.90