Finding the Third Proportional to 280,327.50 and 658,111.50

Step by Step Solution

1. Step 1: Write the proportion equation
   280,327.50 : 658,111.50 = 658,111.50 : x
2. Step 2: Convert to fraction form
   280,327.50/658,111.50 = 658,111.50/x
3. Step 3: Cross multiply
   280,327.50x = 658,111.50 × 658,111.50
4. Step 4: Simplify right side
   280,327.50x = 433,110,746,432.25
5. Step 5: Solve for x
   x = 433,110,746,432.25/280,327.50
6. Step 6: Final answer
   x = 1,545,016.98