Finding the Third Proportional to 57,111.75 and 83,718.56

Step by Step Solution

1. Step 1: Write the proportion equation
   57,111.75 : 83,718.56 = 83,718.56 : x
2. Step 2: Convert to fraction form
   57,111.75/83,718.56 = 83,718.56/x
3. Step 3: Cross multiply
   57,111.75x = 83,718.56 × 83,718.56
4. Step 4: Simplify right side
   57,111.75x = 7,008,797,707.07
5. Step 5: Solve for x
   x = 7,008,797,707.07/57,111.75
6. Step 6: Final answer
   x = 122,720.77