Finding the Third Proportional to 1,553,711 and 3,389,866

Step by Step Solution

1. Step 1: Write the proportion equation
   1,553,711 : 3,389,866 = 3,389,866 : x
2. Step 2: Convert to fraction form
   1,553,711/3,389,866 = 3,389,866/x
3. Step 3: Cross multiply
   1,553,711x = 3,389,866 × 3,389,866
4. Step 4: Simplify right side
   1,553,711x = 11,491,191,497,956
5. Step 5: Solve for x
   x = 11,491,191,497,956/1,553,711
6. Step 6: Final answer
   x = 7,395,964.56