Finding the Third Proportional to 3,828,396 and 8,411,520

Step by Step Solution

1. Step 1: Write the proportion equation
   3,828,396 : 8,411,520 = 8,411,520 : x
2. Step 2: Convert to fraction form
   3,828,396/8,411,520 = 8,411,520/x
3. Step 3: Cross multiply
   3,828,396x = 8,411,520 × 8,411,520
4. Step 4: Simplify right side
   3,828,396x = 70,753,668,710,400
5. Step 5: Solve for x
   x = 70,753,668,710,400/3,828,396
6. Step 6: Final answer
   x = 18,481,282.69