Finding the Third Proportional to 227,758.50 and 498,420

Step by Step Solution

1. Step 1: Write the proportion equation
   227,758.50 : 498,420 = 498,420 : x
2. Step 2: Convert to fraction form
   227,758.50/498,420 = 498,420/x
3. Step 3: Cross multiply
   227,758.50x = 498,420 × 498,420
4. Step 4: Simplify right side
   227,758.50x = 248,422,496,400
5. Step 5: Solve for x
   x = 248,422,496,400/227,758.50
6. Step 6: Final answer
   x = 1,090,727.66