Finding the Third Proportional to 543,328 and 860,144

Step by Step Solution

1. Step 1: Write the proportion equation
   543,328 : 860,144 = 860,144 : x
2. Step 2: Convert to fraction form
   543,328/860,144 = 860,144/x
3. Step 3: Cross multiply
   543,328x = 860,144 × 860,144
4. Step 4: Simplify right side
   543,328x = 739,847,700,736
5. Step 5: Solve for x
   x = 739,847,700,736/543,328
6. Step 6: Final answer
   x = 1,361,696.25