Finding the Third Proportional to 211,476 and 499,040

Step by Step Solution

1. Step 1: Write the proportion equation
   211,476 : 499,040 = 499,040 : x
2. Step 2: Convert to fraction form
   211,476/499,040 = 499,040/x
3. Step 3: Cross multiply
   211,476x = 499,040 × 499,040
4. Step 4: Simplify right side
   211,476x = 249,040,921,600
5. Step 5: Solve for x
   x = 249,040,921,600/211,476
6. Step 6: Final answer
   x = 1,177,632.08