Finding the Third Proportional to 57,262 and 86,521

Step by Step Solution

1. Step 1: Write the proportion equation
   57,262 : 86,521 = 86,521 : x
2. Step 2: Convert to fraction form
   57,262/86,521 = 86,521/x
3. Step 3: Cross multiply
   57,262x = 86,521 × 86,521
4. Step 4: Simplify right side
   57,262x = 7,485,883,441
5. Step 5: Solve for x
   x = 7,485,883,441/57,262
6. Step 6: Final answer
   x = 130,730.39