Finding the Third Proportional to 258,793.50 and 548,691

Step by Step Solution

1. Step 1: Write the proportion equation
   258,793.50 : 548,691 = 548,691 : x
2. Step 2: Convert to fraction form
   258,793.50/548,691 = 548,691/x
3. Step 3: Cross multiply
   258,793.50x = 548,691 × 548,691
4. Step 4: Simplify right side
   258,793.50x = 301,061,813,481
5. Step 5: Solve for x
   x = 301,061,813,481/258,793.50
6. Step 6: Final answer
   x = 1,163,328.34