Finding the Third Proportional to 1,689,678 and 3,519,162

Step by Step Solution

1. Step 1: Write the proportion equation
   1,689,678 : 3,519,162 = 3,519,162 : x
2. Step 2: Convert to fraction form
   1,689,678/3,519,162 = 3,519,162/x
3. Step 3: Cross multiply
   1,689,678x = 3,519,162 × 3,519,162
4. Step 4: Simplify right side
   1,689,678x = 12,384,501,182,244
5. Step 5: Solve for x
   x = 12,384,501,182,244/1,689,678
6. Step 6: Final answer
   x = 7,329,503.72