Finding the Third Proportional to 4,917.38 and 10,288.69

Step by Step Solution

1. Step 1: Write the proportion equation
   4,917.38 : 10,288.69 = 10,288.69 : x
2. Step 2: Convert to fraction form
   4,917.38/10,288.69 = 10,288.69/x
3. Step 3: Cross multiply
   4,917.38x = 10,288.69 × 10,288.69
4. Step 4: Simplify right side
   4,917.38x = 105,857,090.47
5. Step 5: Solve for x
   x = 105,857,090.47/4,917.38
6. Step 6: Final answer
   x = 21,527.15