Finding the Third Proportional to 579,540 and 886,522.50

Step by Step Solution

1. Step 1: Write the proportion equation
   579,540 : 886,522.50 = 886,522.50 : x
2. Step 2: Convert to fraction form
   579,540/886,522.50 = 886,522.50/x
3. Step 3: Cross multiply
   579,540x = 886,522.50 × 886,522.50
4. Step 4: Simplify right side
   579,540x = 785,922,143,006.25
5. Step 5: Solve for x
   x = 785,922,143,006.25/579,540
6. Step 6: Final answer
   x = 1,356,113.72