Finding the Third Proportional to 3,979,459 and 8,526,728

Step by Step Solution

1. Step 1: Write the proportion equation
   3,979,459 : 8,526,728 = 8,526,728 : x
2. Step 2: Convert to fraction form
   3,979,459/8,526,728 = 8,526,728/x
3. Step 3: Cross multiply
   3,979,459x = 8,526,728 × 8,526,728
4. Step 4: Simplify right side
   3,979,459x = 72,705,090,385,984
5. Step 5: Solve for x
   x = 72,705,090,385,984/3,979,459
6. Step 6: Final answer
   x = 18,270,094.10