Finding the Third Proportional to 124,804.50 and 269,290.50

Step by Step Solution

1. Step 1: Write the proportion equation
   124,804.50 : 269,290.50 = 269,290.50 : x
2. Step 2: Convert to fraction form
   124,804.50/269,290.50 = 269,290.50/x
3. Step 3: Cross multiply
   124,804.50x = 269,290.50 × 269,290.50
4. Step 4: Simplify right side
   124,804.50x = 72,517,373,390.25
5. Step 5: Solve for x
   x = 72,517,373,390.25/124,804.50
6. Step 6: Final answer
   x = 581,047.75