Finding the Third Proportional to 56,856 and 89,186

Step by Step Solution

1. Step 1: Write the proportion equation
   56,856 : 89,186 = 89,186 : x
2. Step 2: Convert to fraction form
   56,856/89,186 = 89,186/x
3. Step 3: Cross multiply
   56,856x = 89,186 × 89,186
4. Step 4: Simplify right side
   56,856x = 7,954,142,596
5. Step 5: Solve for x
   x = 7,954,142,596/56,856
6. Step 6: Final answer
   x = 139,899.79