Finding the Third Proportional to 3,643,840 and 5,436,320

Step by Step Solution

1. Step 1: Write the proportion equation
   3,643,840 : 5,436,320 = 5,436,320 : x
2. Step 2: Convert to fraction form
   3,643,840/5,436,320 = 5,436,320/x
3. Step 3: Cross multiply
   3,643,840x = 5,436,320 × 5,436,320
4. Step 4: Simplify right side
   3,643,840x = 29,553,575,142,400
5. Step 5: Solve for x
   x = 29,553,575,142,400/3,643,840
6. Step 6: Final answer
   x = 8,110,557.86