Finding the Third Proportional to 10,678.71 and 15,929.79

Step by Step Solution

1. Step 1: Write the proportion equation
   10,678.71 : 15,929.79 = 15,929.79 : x
2. Step 2: Convert to fraction form
   10,678.71/15,929.79 = 15,929.79/x
3. Step 3: Cross multiply
   10,678.71x = 15,929.79 × 15,929.79
4. Step 4: Simplify right side
   10,678.71x = 253,758,179.58
5. Step 5: Solve for x
   x = 253,758,179.58/10,678.71
6. Step 6: Final answer
   x = 23,763.00