Finding the Third Proportional to 1,621,347 and 3,519,606

Step by Step Solution

1. Step 1: Write the proportion equation
   1,621,347 : 3,519,606 = 3,519,606 : x
2. Step 2: Convert to fraction form
   1,621,347/3,519,606 = 3,519,606/x
3. Step 3: Cross multiply
   1,621,347x = 3,519,606 × 3,519,606
4. Step 4: Simplify right side
   1,621,347x = 12,387,626,395,236
5. Step 5: Solve for x
   x = 12,387,626,395,236/1,621,347
6. Step 6: Final answer
   x = 7,640,330.17