Finding the Third Proportional to 87,016 and 138,460

Step by Step Solution

1. Step 1: Write the proportion equation
   87,016 : 138,460 = 138,460 : x
2. Step 2: Convert to fraction form
   87,016/138,460 = 138,460/x
3. Step 3: Cross multiply
   87,016x = 138,460 × 138,460
4. Step 4: Simplify right side
   87,016x = 19,171,171,600
5. Step 5: Solve for x
   x = 19,171,171,600/87,016
6. Step 6: Final answer
   x = 220,317.78