Finding the Third Proportional to 10,109.81 and 14,628.09

Step by Step Solution

1. Step 1: Write the proportion equation
   10,109.81 : 14,628.09 = 14,628.09 : x
2. Step 2: Convert to fraction form
   10,109.81/14,628.09 = 14,628.09/x
3. Step 3: Cross multiply
   10,109.81x = 14,628.09 × 14,628.09
4. Step 4: Simplify right side
   10,109.81x = 213,981,126.76
5. Step 5: Solve for x
   x = 213,981,126.76/10,109.81
6. Step 6: Final answer
   x = 21,165.69