Finding the Third Proportional to 63,720 and 89,144

Step by Step Solution

1. Step 1: Write the proportion equation
   63,720 : 89,144 = 89,144 : x
2. Step 2: Convert to fraction form
   63,720/89,144 = 89,144/x
3. Step 3: Cross multiply
   63,720x = 89,144 × 89,144
4. Step 4: Simplify right side
   63,720x = 7,946,652,736
5. Step 5: Solve for x
   x = 7,946,652,736/63,720
6. Step 6: Final answer
   x = 124,712.06