Finding the Third Proportional to 308,853 and 481,315.50

Step by Step Solution

1. Step 1: Write the proportion equation
   308,853 : 481,315.50 = 481,315.50 : x
2. Step 2: Convert to fraction form
   308,853/481,315.50 = 481,315.50/x
3. Step 3: Cross multiply
   308,853x = 481,315.50 × 481,315.50
4. Step 4: Simplify right side
   308,853x = 231,664,610,540.25
5. Step 5: Solve for x
   x = 231,664,610,540.25/308,853
6. Step 6: Final answer
   x = 750,080.49