Finding the Third Proportional to 328,878 and 491,998.50

Step by Step Solution

1. Step 1: Write the proportion equation
   328,878 : 491,998.50 = 491,998.50 : x
2. Step 2: Convert to fraction form
   328,878/491,998.50 = 491,998.50/x
3. Step 3: Cross multiply
   328,878x = 491,998.50 × 491,998.50
4. Step 4: Simplify right side
   328,878x = 242,062,524,002.25
5. Step 5: Solve for x
   x = 242,062,524,002.25/328,878
6. Step 6: Final answer
   x = 736,025.29