Finding the Third Proportional to 10,119.94 and 21,390.33

Step by Step Solution

1. Step 1: Write the proportion equation
   10,119.94 : 21,390.33 = 21,390.33 : x
2. Step 2: Convert to fraction form
   10,119.94/21,390.33 = 21,390.33/x
3. Step 3: Cross multiply
   10,119.94x = 21,390.33 × 21,390.33
4. Step 4: Simplify right side
   10,119.94x = 457,546,137.30
5. Step 5: Solve for x
   x = 457,546,137.30/10,119.94
6. Step 6: Final answer
   x = 45,212.35