Finding the Third Proportional to 269,181 and 391,243.50

Step by Step Solution

1. Step 1: Write the proportion equation
   269,181 : 391,243.50 = 391,243.50 : x
2. Step 2: Convert to fraction form
   269,181/391,243.50 = 391,243.50/x
3. Step 3: Cross multiply
   269,181x = 391,243.50 × 391,243.50
4. Step 4: Simplify right side
   269,181x = 153,071,476,292.25
5. Step 5: Solve for x
   x = 153,071,476,292.25/269,181
6. Step 6: Final answer
   x = 568,656.32