Finding the Third Proportional to 294,112.50 and 644,193

Step by Step Solution

1. Step 1: Write the proportion equation
   294,112.50 : 644,193 = 644,193 : x
2. Step 2: Convert to fraction form
   294,112.50/644,193 = 644,193/x
3. Step 3: Cross multiply
   294,112.50x = 644,193 × 644,193
4. Step 4: Simplify right side
   294,112.50x = 414,984,621,249
5. Step 5: Solve for x
   x = 414,984,621,249/294,112.50
6. Step 6: Final answer
   x = 1,410,972.40