Finding the Third Proportional to 354,802.50 and 550,890

Step by Step Solution

1. Step 1: Write the proportion equation
   354,802.50 : 550,890 = 550,890 : x
2. Step 2: Convert to fraction form
   354,802.50/550,890 = 550,890/x
3. Step 3: Cross multiply
   354,802.50x = 550,890 × 550,890
4. Step 4: Simplify right side
   354,802.50x = 303,479,792,100
5. Step 5: Solve for x
   x = 303,479,792,100/354,802.50
6. Step 6: Final answer
   x = 855,348.52