Finding the Third Proportional to 2,913.05 and 3,934.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,913.05 : 3,934.20 = 3,934.20 : x
2. Step 2: Convert to fraction form
   2,913.05/3,934.20 = 3,934.20/x
3. Step 3: Cross multiply
   2,913.05x = 3,934.20 × 3,934.20
4. Step 4: Simplify right side
   2,913.05x = 15,477,892.76
5. Step 5: Solve for x
   x = 15,477,892.76/2,913.05
6. Step 6: Final answer
   x = 5,313.30