Finding the Third Proportional to 63,728 and 89,130

Step by Step Solution

1. Step 1: Write the proportion equation
   63,728 : 89,130 = 89,130 : x
2. Step 2: Convert to fraction form
   63,728/89,130 = 89,130/x
3. Step 3: Cross multiply
   63,728x = 89,130 × 89,130
4. Step 4: Simplify right side
   63,728x = 7,944,156,900
5. Step 5: Solve for x
   x = 7,944,156,900/63,728
6. Step 6: Final answer
   x = 124,657.24