Finding the Third Proportional to 324,862.50 and 499,980

Step by Step Solution

1. Step 1: Write the proportion equation
   324,862.50 : 499,980 = 499,980 : x
2. Step 2: Convert to fraction form
   324,862.50/499,980 = 499,980/x
3. Step 3: Cross multiply
   324,862.50x = 499,980 × 499,980
4. Step 4: Simplify right side
   324,862.50x = 249,980,000,400
5. Step 5: Solve for x
   x = 249,980,000,400/324,862.50
6. Step 6: Final answer
   x = 769,494.79