Finding the Third Proportional to 1,691,865 and 2,621,412

Step by Step Solution

1. Step 1: Write the proportion equation
   1,691,865 : 2,621,412 = 2,621,412 : x
2. Step 2: Convert to fraction form
   1,691,865/2,621,412 = 2,621,412/x
3. Step 3: Cross multiply
   1,691,865x = 2,621,412 × 2,621,412
4. Step 4: Simplify right side
   1,691,865x = 6,871,800,873,744
5. Step 5: Solve for x
   x = 6,871,800,873,744/1,691,865
6. Step 6: Final answer
   x = 4,061,672.10