Finding the Third Proportional to 4,719.52 and 9,742.78

Step by Step Solution

1. Step 1: Write the proportion equation
   4,719.52 : 9,742.78 = 9,742.78 : x
2. Step 2: Convert to fraction form
   4,719.52/9,742.78 = 9,742.78/x
3. Step 3: Cross multiply
   4,719.52x = 9,742.78 × 9,742.78
4. Step 4: Simplify right side
   4,719.52x = 94,921,786.49
5. Step 5: Solve for x
   x = 94,921,786.49/4,719.52
6. Step 6: Final answer
   x = 20,112.61