Finding the Third Proportional to 404,257.50 and 606,334.50

Step by Step Solution

1. Step 1: Write the proportion equation
   404,257.50 : 606,334.50 = 606,334.50 : x
2. Step 2: Convert to fraction form
   404,257.50/606,334.50 = 606,334.50/x
3. Step 3: Cross multiply
   404,257.50x = 606,334.50 × 606,334.50
4. Step 4: Simplify right side
   404,257.50x = 367,641,525,890.25
5. Step 5: Solve for x
   x = 367,641,525,890.25/404,257.50
6. Step 6: Final answer
   x = 909,424.13