Finding the Third Proportional to 644,233.50 and 1,399,153.50

Step by Step Solution

1. Step 1: Write the proportion equation
   644,233.50 : 1,399,153.50 = 1,399,153.50 : x
2. Step 2: Convert to fraction form
   644,233.50/1,399,153.50 = 1,399,153.50/x
3. Step 3: Cross multiply
   644,233.50x = 1,399,153.50 × 1,399,153.50
4. Step 4: Simplify right side
   644,233.50x = 1,957,630,516,562.25
5. Step 5: Solve for x
   x = 1,957,630,516,562.25/644,233.50
6. Step 6: Final answer
   x = 3,038,697.18