Finding the Third Proportional to 3,835,145 and 8,521,609

Step by Step Solution

1. Step 1: Write the proportion equation
   3,835,145 : 8,521,609 = 8,521,609 : x
2. Step 2: Convert to fraction form
   3,835,145/8,521,609 = 8,521,609/x
3. Step 3: Cross multiply
   3,835,145x = 8,521,609 × 8,521,609
4. Step 4: Simplify right side
   3,835,145x = 72,617,819,948,881
5. Step 5: Solve for x
   x = 72,617,819,948,881/3,835,145
6. Step 6: Final answer
   x = 18,934,830.35