Finding the Third Proportional to 288,605.25 and 443,979

Step by Step Solution

1. Step 1: Write the proportion equation
   288,605.25 : 443,979 = 443,979 : x
2. Step 2: Convert to fraction form
   288,605.25/443,979 = 443,979/x
3. Step 3: Cross multiply
   288,605.25x = 443,979 × 443,979
4. Step 4: Simplify right side
   288,605.25x = 197,117,352,441
5. Step 5: Solve for x
   x = 197,117,352,441/288,605.25
6. Step 6: Final answer
   x = 682,999.88