Finding the Third Proportional to 4,072,560 and 8,426,968

Step by Step Solution

1. Step 1: Write the proportion equation
   4,072,560 : 8,426,968 = 8,426,968 : x
2. Step 2: Convert to fraction form
   4,072,560/8,426,968 = 8,426,968/x
3. Step 3: Cross multiply
   4,072,560x = 8,426,968 × 8,426,968
4. Step 4: Simplify right side
   4,072,560x = 71,013,789,673,024
5. Step 5: Solve for x
   x = 71,013,789,673,024/4,072,560
6. Step 6: Final answer
   x = 17,437,137.74