Finding the Third Proportional to 371,636.50 and 548,706.50

Step by Step Solution

1. Step 1: Write the proportion equation
   371,636.50 : 548,706.50 = 548,706.50 : x
2. Step 2: Convert to fraction form
   371,636.50/548,706.50 = 548,706.50/x
3. Step 3: Cross multiply
   371,636.50x = 548,706.50 × 548,706.50
4. Step 4: Simplify right side
   371,636.50x = 301,078,823,142.25
5. Step 5: Solve for x
   x = 301,078,823,142.25/371,636.50
6. Step 6: Final answer
   x = 810,143.31