Finding the Third Proportional to 208,891.50 and 318,233.25

Step by Step Solution

1. Step 1: Write the proportion equation
   208,891.50 : 318,233.25 = 318,233.25 : x
2. Step 2: Convert to fraction form
   208,891.50/318,233.25 = 318,233.25/x
3. Step 3: Cross multiply
   208,891.50x = 318,233.25 × 318,233.25
4. Step 4: Simplify right side
   208,891.50x = 101,272,401,405.56
5. Step 5: Solve for x
   x = 101,272,401,405.56/208,891.50
6. Step 6: Final answer
   x = 484,808.63