Finding the Third Proportional to 261,355.50 and 368,055

Step by Step Solution

1. Step 1: Write the proportion equation
   261,355.50 : 368,055 = 368,055 : x
2. Step 2: Convert to fraction form
   261,355.50/368,055 = 368,055/x
3. Step 3: Cross multiply
   261,355.50x = 368,055 × 368,055
4. Step 4: Simplify right side
   261,355.50x = 135,464,483,025
5. Step 5: Solve for x
   x = 135,464,483,025/261,355.50
6. Step 6: Final answer
   x = 518,315.03