Finding the Third Proportional to 57,849 and 87,390

Step by Step Solution

1. Step 1: Write the proportion equation
   57,849 : 87,390 = 87,390 : x
2. Step 2: Convert to fraction form
   57,849/87,390 = 87,390/x
3. Step 3: Cross multiply
   57,849x = 87,390 × 87,390
4. Step 4: Simplify right side
   57,849x = 7,637,012,100
5. Step 5: Solve for x
   x = 7,637,012,100/57,849
6. Step 6: Final answer
   x = 132,016.32