Finding the Third Proportional to 440,940 and 644,404.50

Step by Step Solution

1. Step 1: Write the proportion equation
   440,940 : 644,404.50 = 644,404.50 : x
2. Step 2: Convert to fraction form
   440,940/644,404.50 = 644,404.50/x
3. Step 3: Cross multiply
   440,940x = 644,404.50 × 644,404.50
4. Step 4: Simplify right side
   440,940x = 415,257,159,620.25
5. Step 5: Solve for x
   x = 415,257,159,620.25/440,940
6. Step 6: Final answer
   x = 941,754.34