Finding the Third Proportional to 3,894,128 and 8,522,349

Step by Step Solution

1. Step 1: Write the proportion equation
   3,894,128 : 8,522,349 = 8,522,349 : x
2. Step 2: Convert to fraction form
   3,894,128/8,522,349 = 8,522,349/x
3. Step 3: Cross multiply
   3,894,128x = 8,522,349 × 8,522,349
4. Step 4: Simplify right side
   3,894,128x = 72,630,432,477,801
5. Step 5: Solve for x
   x = 72,630,432,477,801/3,894,128
6. Step 6: Final answer
   x = 18,651,269.93