Finding the Third Proportional to 56,016 and 86,778

Step by Step Solution

1. Step 1: Write the proportion equation
   56,016 : 86,778 = 86,778 : x
2. Step 2: Convert to fraction form
   56,016/86,778 = 86,778/x
3. Step 3: Cross multiply
   56,016x = 86,778 × 86,778
4. Step 4: Simplify right side
   56,016x = 7,530,421,284
5. Step 5: Solve for x
   x = 7,530,421,284/56,016
6. Step 6: Final answer
   x = 134,433.40