Finding the Third Proportional to 288,609 and 443,983.50

Step by Step Solution

1. Step 1: Write the proportion equation
   288,609 : 443,983.50 = 443,983.50 : x
2. Step 2: Convert to fraction form
   288,609/443,983.50 = 443,983.50/x
3. Step 3: Cross multiply
   288,609x = 443,983.50 × 443,983.50
4. Step 4: Simplify right side
   288,609x = 197,121,348,272.25
5. Step 5: Solve for x
   x = 197,121,348,272.25/288,609
6. Step 6: Final answer
   x = 683,004.86