Finding the Third Proportional to 1,621,338 and 3,519,588

Step by Step Solution

1. Step 1: Write the proportion equation
   1,621,338 : 3,519,588 = 3,519,588 : x
2. Step 2: Convert to fraction form
   1,621,338/3,519,588 = 3,519,588/x
3. Step 3: Cross multiply
   1,621,338x = 3,519,588 × 3,519,588
4. Step 4: Simplify right side
   1,621,338x = 12,387,499,689,744
5. Step 5: Solve for x
   x = 12,387,499,689,744/1,621,338
6. Step 6: Final answer
   x = 7,640,294.43