Finding the Third Proportional to 305,614 and 663,819.50

Step by Step Solution

1. Step 1: Write the proportion equation
   305,614 : 663,819.50 = 663,819.50 : x
2. Step 2: Convert to fraction form
   305,614/663,819.50 = 663,819.50/x
3. Step 3: Cross multiply
   305,614x = 663,819.50 × 663,819.50
4. Step 4: Simplify right side
   305,614x = 440,656,328,580.25
5. Step 5: Solve for x
   x = 440,656,328,580.25/305,614
6. Step 6: Final answer
   x = 1,441,872.19