Finding the Third Proportional to 3,215,434 and 7,078,558

Step by Step Solution

1. Step 1: Write the proportion equation
   3,215,434 : 7,078,558 = 7,078,558 : x
2. Step 2: Convert to fraction form
   3,215,434/7,078,558 = 7,078,558/x
3. Step 3: Cross multiply
   3,215,434x = 7,078,558 × 7,078,558
4. Step 4: Simplify right side
   3,215,434x = 50,105,983,359,364
5. Step 5: Solve for x
   x = 50,105,983,359,364/3,215,434
6. Step 6: Final answer
   x = 15,582,961.23