Finding the Third Proportional to 168,777 and 261,265.50

Step by Step Solution

1. Step 1: Write the proportion equation
   168,777 : 261,265.50 = 261,265.50 : x
2. Step 2: Convert to fraction form
   168,777/261,265.50 = 261,265.50/x
3. Step 3: Cross multiply
   168,777x = 261,265.50 × 261,265.50
4. Step 4: Simplify right side
   168,777x = 68,259,661,490.25
5. Step 5: Solve for x
   x = 68,259,661,490.25/168,777
6. Step 6: Final answer
   x = 404,436.99