Finding the Third Proportional to 1,621,334 and 3,519,580

Step by Step Solution

1. Step 1: Write the proportion equation
   1,621,334 : 3,519,580 = 3,519,580 : x
2. Step 2: Convert to fraction form
   1,621,334/3,519,580 = 3,519,580/x
3. Step 3: Cross multiply
   1,621,334x = 3,519,580 × 3,519,580
4. Step 4: Simplify right side
   1,621,334x = 12,387,443,376,400
5. Step 5: Solve for x
   x = 12,387,443,376,400/1,621,334
6. Step 6: Final answer
   x = 7,640,278.55