Finding the Third Proportional to 361,282 and 508,315.50

Step by Step Solution

1. Step 1: Write the proportion equation
   361,282 : 508,315.50 = 508,315.50 : x
2. Step 2: Convert to fraction form
   361,282/508,315.50 = 508,315.50/x
3. Step 3: Cross multiply
   361,282x = 508,315.50 × 508,315.50
4. Step 4: Simplify right side
   361,282x = 258,384,647,540.25
5. Step 5: Solve for x
   x = 258,384,647,540.25/361,282
6. Step 6: Final answer
   x = 715,188.27