Finding the Third Proportional to 3,324,386 and 7,279,340

Step by Step Solution

1. Step 1: Write the proportion equation
   3,324,386 : 7,279,340 = 7,279,340 : x
2. Step 2: Convert to fraction form
   3,324,386/7,279,340 = 7,279,340/x
3. Step 3: Cross multiply
   3,324,386x = 7,279,340 × 7,279,340
4. Step 4: Simplify right side
   3,324,386x = 52,988,790,835,600
5. Step 5: Solve for x
   x = 52,988,790,835,600/3,324,386
6. Step 6: Final answer
   x = 15,939,421.85