Finding the Third Proportional to 63,968 and 89,040

Step by Step Solution

1. Step 1: Write the proportion equation
   63,968 : 89,040 = 89,040 : x
2. Step 2: Convert to fraction form
   63,968/89,040 = 89,040/x
3. Step 3: Cross multiply
   63,968x = 89,040 × 89,040
4. Step 4: Simplify right side
   63,968x = 7,928,121,600
5. Step 5: Solve for x
   x = 7,928,121,600/63,968
6. Step 6: Final answer
   x = 123,938.87