Finding the Third Proportional to 3,658,328 and 7,878,542

Step by Step Solution

1. Step 1: Write the proportion equation
   3,658,328 : 7,878,542 = 7,878,542 : x
2. Step 2: Convert to fraction form
   3,658,328/7,878,542 = 7,878,542/x
3. Step 3: Cross multiply
   3,658,328x = 7,878,542 × 7,878,542
4. Step 4: Simplify right side
   3,658,328x = 62,071,424,045,764
5. Step 5: Solve for x
   x = 62,071,424,045,764/3,658,328
6. Step 6: Final answer
   x = 16,967,156.59