Finding the Third Proportional to 28,724 and 60,857

Step by Step Solution

1. Step 1: Write the proportion equation
   28,724 : 60,857 = 60,857 : x
2. Step 2: Convert to fraction form
   28,724/60,857 = 60,857/x
3. Step 3: Cross multiply
   28,724x = 60,857 × 60,857
4. Step 4: Simplify right side
   28,724x = 3,703,574,449
5. Step 5: Solve for x
   x = 3,703,574,449/28,724
6. Step 6: Final answer
   x = 128,936.58