Finding the Third Proportional to 3,930,217 and 8,593,591

Step by Step Solution

1. Step 1: Write the proportion equation
   3,930,217 : 8,593,591 = 8,593,591 : x
2. Step 2: Convert to fraction form
   3,930,217/8,593,591 = 8,593,591/x
3. Step 3: Cross multiply
   3,930,217x = 8,593,591 × 8,593,591
4. Step 4: Simplify right side
   3,930,217x = 73,849,806,275,281
5. Step 5: Solve for x
   x = 73,849,806,275,281/3,930,217
6. Step 6: Final answer
   x = 18,790,261.78