Finding the Third Proportional to 28,689 and 60,858

Step by Step Solution

1. Step 1: Write the proportion equation
   28,689 : 60,858 = 60,858 : x
2. Step 2: Convert to fraction form
   28,689/60,858 = 60,858/x
3. Step 3: Cross multiply
   28,689x = 60,858 × 60,858
4. Step 4: Simplify right side
   28,689x = 3,703,696,164
5. Step 5: Solve for x
   x = 3,703,696,164/28,689
6. Step 6: Final answer
   x = 129,098.13