Finding the Third Proportional to 3,117.75 and 7,419.38

Step by Step Solution

1. Step 1: Write the proportion equation
   3,117.75 : 7,419.38 = 7,419.38 : x
2. Step 2: Convert to fraction form
   3,117.75/7,419.38 = 7,419.38/x
3. Step 3: Cross multiply
   3,117.75x = 7,419.38 × 7,419.38
4. Step 4: Simplify right side
   3,117.75x = 55,047,125.39
5. Step 5: Solve for x
   x = 55,047,125.39/3,117.75
6. Step 6: Final answer
   x = 17,656.04