Finding the Third Proportional to 308,970 and 440,986.50

Step by Step Solution

1. Step 1: Write the proportion equation
   308,970 : 440,986.50 = 440,986.50 : x
2. Step 2: Convert to fraction form
   308,970/440,986.50 = 440,986.50/x
3. Step 3: Cross multiply
   308,970x = 440,986.50 × 440,986.50
4. Step 4: Simplify right side
   308,970x = 194,469,093,182.25
5. Step 5: Solve for x
   x = 194,469,093,182.25/308,970
6. Step 6: Final answer
   x = 629,410.92