Finding the Third Proportional to 56,591 and 86,116

Step by Step Solution

1. Step 1: Write the proportion equation
   56,591 : 86,116 = 86,116 : x
2. Step 2: Convert to fraction form
   56,591/86,116 = 86,116/x
3. Step 3: Cross multiply
   56,591x = 86,116 × 86,116
4. Step 4: Simplify right side
   56,591x = 7,415,965,456
5. Step 5: Solve for x
   x = 7,415,965,456/56,591
6. Step 6: Final answer
   x = 131,044.96