Finding the Third Proportional to 612,723 and 897,724.50

Step by Step Solution

1. Step 1: Write the proportion equation
   612,723 : 897,724.50 = 897,724.50 : x
2. Step 2: Convert to fraction form
   612,723/897,724.50 = 897,724.50/x
3. Step 3: Cross multiply
   612,723x = 897,724.50 × 897,724.50
4. Step 4: Simplify right side
   612,723x = 805,909,277,900.25
5. Step 5: Solve for x
   x = 805,909,277,900.25/612,723
6. Step 6: Final answer
   x = 1,315,291.38