Finding the Third Proportional to 258,673.50 and 562,909.50

Step by Step Solution

1. Step 1: Write the proportion equation
   258,673.50 : 562,909.50 = 562,909.50 : x
2. Step 2: Convert to fraction form
   258,673.50/562,909.50 = 562,909.50/x
3. Step 3: Cross multiply
   258,673.50x = 562,909.50 × 562,909.50
4. Step 4: Simplify right side
   258,673.50x = 316,867,105,190.25
5. Step 5: Solve for x
   x = 316,867,105,190.25/258,673.50
6. Step 6: Final answer
   x = 1,224,969.33