Finding the Third Proportional to 3,883,436 and 8,513,368

Step by Step Solution

1. Step 1: Write the proportion equation
   3,883,436 : 8,513,368 = 8,513,368 : x
2. Step 2: Convert to fraction form
   3,883,436/8,513,368 = 8,513,368/x
3. Step 3: Cross multiply
   3,883,436x = 8,513,368 × 8,513,368
4. Step 4: Simplify right side
   3,883,436x = 72,477,434,703,424
5. Step 5: Solve for x
   x = 72,477,434,703,424/3,883,436
6. Step 6: Final answer
   x = 18,663,223.68