Finding the Third Proportional to 410,981.50 and 644,871

Step by Step Solution

1. Step 1: Write the proportion equation
   410,981.50 : 644,871 = 644,871 : x
2. Step 2: Convert to fraction form
   410,981.50/644,871 = 644,871/x
3. Step 3: Cross multiply
   410,981.50x = 644,871 × 644,871
4. Step 4: Simplify right side
   410,981.50x = 415,858,606,641
5. Step 5: Solve for x
   x = 415,858,606,641/410,981.50
6. Step 6: Final answer
   x = 1,011,866.97