Finding the Third Proportional to 3,215,432 and 7,078,560

Step by Step Solution

1. Step 1: Write the proportion equation
   3,215,432 : 7,078,560 = 7,078,560 : x
2. Step 2: Convert to fraction form
   3,215,432/7,078,560 = 7,078,560/x
3. Step 3: Cross multiply
   3,215,432x = 7,078,560 × 7,078,560
4. Step 4: Simplify right side
   3,215,432x = 50,106,011,673,600
5. Step 5: Solve for x
   x = 50,106,011,673,600/3,215,432
6. Step 6: Final answer
   x = 15,582,979.73