Finding the Third Proportional to 1,578,291 and 3,478,314

Step by Step Solution

1. Step 1: Write the proportion equation
   1,578,291 : 3,478,314 = 3,478,314 : x
2. Step 2: Convert to fraction form
   1,578,291/3,478,314 = 3,478,314/x
3. Step 3: Cross multiply
   1,578,291x = 3,478,314 × 3,478,314
4. Step 4: Simplify right side
   1,578,291x = 12,098,668,282,596
5. Step 5: Solve for x
   x = 12,098,668,282,596/1,578,291
6. Step 6: Final answer
   x = 7,665,676.53