Finding the Third Proportional to 57,606 and 87,215

Step by Step Solution

1. Step 1: Write the proportion equation
   57,606 : 87,215 = 87,215 : x
2. Step 2: Convert to fraction form
   57,606/87,215 = 87,215/x
3. Step 3: Cross multiply
   57,606x = 87,215 × 87,215
4. Step 4: Simplify right side
   57,606x = 7,606,456,225
5. Step 5: Solve for x
   x = 7,606,456,225/57,606
6. Step 6: Final answer
   x = 132,042.78