Finding the Third Proportional to 10,422.42 and 15,286.22

Step by Step Solution

1. Step 1: Write the proportion equation
   10,422.42 : 15,286.22 = 15,286.22 : x
2. Step 2: Convert to fraction form
   10,422.42/15,286.22 = 15,286.22/x
3. Step 3: Cross multiply
   10,422.42x = 15,286.22 × 15,286.22
4. Step 4: Simplify right side
   10,422.42x = 233,668,483.67
5. Step 5: Solve for x
   x = 233,668,483.67/10,422.42
6. Step 6: Final answer
   x = 22,419.79