Finding the Third Proportional to 57,066 and 85,772

Step by Step Solution

1. Step 1: Write the proportion equation
   57,066 : 85,772 = 85,772 : x
2. Step 2: Convert to fraction form
   57,066/85,772 = 85,772/x
3. Step 3: Cross multiply
   57,066x = 85,772 × 85,772
4. Step 4: Simplify right side
   57,066x = 7,356,835,984
5. Step 5: Solve for x
   x = 7,356,835,984/57,066
6. Step 6: Final answer
   x = 128,918.02