Finding the Third Proportional to 10,639.25 and 16,838.88

Step by Step Solution

1. Step 1: Write the proportion equation
   10,639.25 : 16,838.88 = 16,838.88 : x
2. Step 2: Convert to fraction form
   10,639.25/16,838.88 = 16,838.88/x
3. Step 3: Cross multiply
   10,639.25x = 16,838.88 × 16,838.88
4. Step 4: Simplify right side
   10,639.25x = 283,547,711.27
5. Step 5: Solve for x
   x = 283,547,711.27/10,639.25
6. Step 6: Final answer
   x = 26,651.10