Finding the Third Proportional to 57,456 and 89,173

Step by Step Solution

1. Step 1: Write the proportion equation
   57,456 : 89,173 = 89,173 : x
2. Step 2: Convert to fraction form
   57,456/89,173 = 89,173/x
3. Step 3: Cross multiply
   57,456x = 89,173 × 89,173
4. Step 4: Simplify right side
   57,456x = 7,951,823,929
5. Step 5: Solve for x
   x = 7,951,823,929/57,456
6. Step 6: Final answer
   x = 138,398.50