Finding the Third Proportional to 298,022.50 and 646,504

Step by Step Solution

1. Step 1: Write the proportion equation
   298,022.50 : 646,504 = 646,504 : x
2. Step 2: Convert to fraction form
   298,022.50/646,504 = 646,504/x
3. Step 3: Cross multiply
   298,022.50x = 646,504 × 646,504
4. Step 4: Simplify right side
   298,022.50x = 417,967,422,016
5. Step 5: Solve for x
   x = 417,967,422,016/298,022.50
6. Step 6: Final answer
   x = 1,402,469.35