Finding the Third Proportional to 126,109 and 258,050

Step by Step Solution

1. Step 1: Write the proportion equation
   126,109 : 258,050 = 258,050 : x
2. Step 2: Convert to fraction form
   126,109/258,050 = 258,050/x
3. Step 3: Cross multiply
   126,109x = 258,050 × 258,050
4. Step 4: Simplify right side
   126,109x = 66,589,802,500
5. Step 5: Solve for x
   x = 66,589,802,500/126,109
6. Step 6: Final answer
   x = 528,033.70