Finding the Third Proportional to 339,023.25 and 525,280.50

Step by Step Solution

1. Step 1: Write the proportion equation
   339,023.25 : 525,280.50 = 525,280.50 : x
2. Step 2: Convert to fraction form
   339,023.25/525,280.50 = 525,280.50/x
3. Step 3: Cross multiply
   339,023.25x = 525,280.50 × 525,280.50
4. Step 4: Simplify right side
   339,023.25x = 275,919,603,680.25
5. Step 5: Solve for x
   x = 275,919,603,680.25/339,023.25
6. Step 6: Final answer
   x = 813,866.32