Finding the Third Proportional to 1,621,316 and 3,519,544

Step by Step Solution

1. Step 1: Write the proportion equation
   1,621,316 : 3,519,544 = 3,519,544 : x
2. Step 2: Convert to fraction form
   1,621,316/3,519,544 = 3,519,544/x
3. Step 3: Cross multiply
   1,621,316x = 3,519,544 × 3,519,544
4. Step 4: Simplify right side
   1,621,316x = 12,387,189,967,936
5. Step 5: Solve for x
   x = 12,387,189,967,936/1,621,316
6. Step 6: Final answer
   x = 7,640,207.07