Finding the Third Proportional to 3,426,666 and 5,140,728

Step by Step Solution

1. Step 1: Write the proportion equation
   3,426,666 : 5,140,728 = 5,140,728 : x
2. Step 2: Convert to fraction form
   3,426,666/5,140,728 = 5,140,728/x
3. Step 3: Cross multiply
   3,426,666x = 5,140,728 × 5,140,728
4. Step 4: Simplify right side
   3,426,666x = 26,427,084,369,984
5. Step 5: Solve for x
   x = 26,427,084,369,984/3,426,666
6. Step 6: Final answer
   x = 7,712,185.66