Finding the Third Proportional to 57,736 and 86,604

Step by Step Solution

1. Step 1: Write the proportion equation
   57,736 : 86,604 = 86,604 : x
2. Step 2: Convert to fraction form
   57,736/86,604 = 86,604/x
3. Step 3: Cross multiply
   57,736x = 86,604 × 86,604
4. Step 4: Simplify right side
   57,736x = 7,500,252,816
5. Step 5: Solve for x
   x = 7,500,252,816/57,736
6. Step 6: Final answer
   x = 129,906