Finding the Third Proportional to 3,658,336 and 7,878,560

Step by Step Solution

1. Step 1: Write the proportion equation
   3,658,336 : 7,878,560 = 7,878,560 : x
2. Step 2: Convert to fraction form
   3,658,336/7,878,560 = 7,878,560/x
3. Step 3: Cross multiply
   3,658,336x = 7,878,560 × 7,878,560
4. Step 4: Simplify right side
   3,658,336x = 62,071,707,673,600
5. Step 5: Solve for x
   x = 62,071,707,673,600/3,658,336
6. Step 6: Final answer
   x = 16,967,197.02