Finding the Third Proportional to 451,572 and 699,589.50

Step by Step Solution

1. Step 1: Write the proportion equation
   451,572 : 699,589.50 = 699,589.50 : x
2. Step 2: Convert to fraction form
   451,572/699,589.50 = 699,589.50/x
3. Step 3: Cross multiply
   451,572x = 699,589.50 × 699,589.50
4. Step 4: Simplify right side
   451,572x = 489,425,468,510.25
5. Step 5: Solve for x
   x = 489,425,468,510.25/451,572
6. Step 6: Final answer
   x = 1,083,825.99