Finding the Third Proportional to 1,606,421 and 3,378,507

Step by Step Solution

1. Step 1: Write the proportion equation
   1,606,421 : 3,378,507 = 3,378,507 : x
2. Step 2: Convert to fraction form
   1,606,421/3,378,507 = 3,378,507/x
3. Step 3: Cross multiply
   1,606,421x = 3,378,507 × 3,378,507
4. Step 4: Simplify right side
   1,606,421x = 11,414,309,549,049
5. Step 5: Solve for x
   x = 11,414,309,549,049/1,606,421
6. Step 6: Final answer
   x = 7,105,428.50