Finding the Third Proportional to 59,640 and 126,390

Step by Step Solution

1. Step 1: Write the proportion equation
   59,640 : 126,390 = 126,390 : x
2. Step 2: Convert to fraction form
   59,640/126,390 = 126,390/x
3. Step 3: Cross multiply
   59,640x = 126,390 × 126,390
4. Step 4: Simplify right side
   59,640x = 15,974,432,100
5. Step 5: Solve for x
   x = 15,974,432,100/59,640
6. Step 6: Final answer
   x = 267,847.62