Finding the Third Proportional to 317,853 and 480,019.50

Step by Step Solution

1. Step 1: Write the proportion equation
   317,853 : 480,019.50 = 480,019.50 : x
2. Step 2: Convert to fraction form
   317,853/480,019.50 = 480,019.50/x
3. Step 3: Cross multiply
   317,853x = 480,019.50 × 480,019.50
4. Step 4: Simplify right side
   317,853x = 230,418,720,380.25
5. Step 5: Solve for x
   x = 230,418,720,380.25/317,853
6. Step 6: Final answer
   x = 724,922.28