Finding the Third Proportional to 294,695 and 450,500.50

Step by Step Solution

1. Step 1: Write the proportion equation
   294,695 : 450,500.50 = 450,500.50 : x
2. Step 2: Convert to fraction form
   294,695/450,500.50 = 450,500.50/x
3. Step 3: Cross multiply
   294,695x = 450,500.50 × 450,500.50
4. Step 4: Simplify right side
   294,695x = 202,950,700,500.25
5. Step 5: Solve for x
   x = 202,950,700,500.25/294,695
6. Step 6: Final answer
   x = 688,680.50