Finding the Third Proportional to 57,856 and 86,768

Step by Step Solution

1. Step 1: Write the proportion equation
   57,856 : 86,768 = 86,768 : x
2. Step 2: Convert to fraction form
   57,856/86,768 = 86,768/x
3. Step 3: Cross multiply
   57,856x = 86,768 × 86,768
4. Step 4: Simplify right side
   57,856x = 7,528,685,824
5. Step 5: Solve for x
   x = 7,528,685,824/57,856
6. Step 6: Final answer
   x = 130,128.00