Finding the Third Proportional to 624,489 and 892,363.50

Step by Step Solution

1. Step 1: Write the proportion equation
   624,489 : 892,363.50 = 892,363.50 : x
2. Step 2: Convert to fraction form
   624,489/892,363.50 = 892,363.50/x
3. Step 3: Cross multiply
   624,489x = 892,363.50 × 892,363.50
4. Step 4: Simplify right side
   624,489x = 796,312,616,132.25
5. Step 5: Solve for x
   x = 796,312,616,132.25/624,489
6. Step 6: Final answer
   x = 1,275,142.74