Finding the Third Proportional to 59,458 and 87,216

Step by Step Solution

1. Step 1: Write the proportion equation
   59,458 : 87,216 = 87,216 : x
2. Step 2: Convert to fraction form
   59,458/87,216 = 87,216/x
3. Step 3: Cross multiply
   59,458x = 87,216 × 87,216
4. Step 4: Simplify right side
   59,458x = 7,606,630,656
5. Step 5: Solve for x
   x = 7,606,630,656/59,458
6. Step 6: Final answer
   x = 127,932.84