Finding the Third Proportional to 4,072,236 and 8,426,355

Step by Step Solution

1. Step 1: Write the proportion equation
   4,072,236 : 8,426,355 = 8,426,355 : x
2. Step 2: Convert to fraction form
   4,072,236/8,426,355 = 8,426,355/x
3. Step 3: Cross multiply
   4,072,236x = 8,426,355 × 8,426,355
4. Step 4: Simplify right side
   4,072,236x = 71,003,458,586,025
5. Step 5: Solve for x
   x = 71,003,458,586,025/4,072,236
6. Step 6: Final answer
   x = 17,435,988.14