Finding the Third Proportional to 258,579 and 548,464.50

Step by Step Solution

1. Step 1: Write the proportion equation
   258,579 : 548,464.50 = 548,464.50 : x
2. Step 2: Convert to fraction form
   258,579/548,464.50 = 548,464.50/x
3. Step 3: Cross multiply
   258,579x = 548,464.50 × 548,464.50
4. Step 4: Simplify right side
   258,579x = 300,813,307,760.25
5. Step 5: Solve for x
   x = 300,813,307,760.25/258,579
6. Step 6: Final answer
   x = 1,163,332.32