Finding the Third Proportional to 258,908.50 and 349,802

Step by Step Solution

1. Step 1: Write the proportion equation
   258,908.50 : 349,802 = 349,802 : x
2. Step 2: Convert to fraction form
   258,908.50/349,802 = 349,802/x
3. Step 3: Cross multiply
   258,908.50x = 349,802 × 349,802
4. Step 4: Simplify right side
   258,908.50x = 122,361,439,204
5. Step 5: Solve for x
   x = 122,361,439,204/258,908.50
6. Step 6: Final answer
   x = 472,604.95