Finding the Third Proportional to 775,510 and 1,621,648

Step by Step Solution

1. Step 1: Write the proportion equation
   775,510 : 1,621,648 = 1,621,648 : x
2. Step 2: Convert to fraction form
   775,510/1,621,648 = 1,621,648/x
3. Step 3: Cross multiply
   775,510x = 1,621,648 × 1,621,648
4. Step 4: Simplify right side
   775,510x = 2,629,742,235,904
5. Step 5: Solve for x
   x = 2,629,742,235,904/775,510
6. Step 6: Final answer
   x = 3,390,984.30