Finding the Third Proportional to 258,386 and 548,092

Step by Step Solution

1. Step 1: Write the proportion equation
   258,386 : 548,092 = 548,092 : x
2. Step 2: Convert to fraction form
   258,386/548,092 = 548,092/x
3. Step 3: Cross multiply
   258,386x = 548,092 × 548,092
4. Step 4: Simplify right side
   258,386x = 300,404,840,464
5. Step 5: Solve for x
   x = 300,404,840,464/258,386
6. Step 6: Final answer
   x = 1,162,620.42