Finding the Third Proportional to 1,309,405 and 2,818,928

Step by Step Solution

1. Step 1: Write the proportion equation
   1,309,405 : 2,818,928 = 2,818,928 : x
2. Step 2: Convert to fraction form
   1,309,405/2,818,928 = 2,818,928/x
3. Step 3: Cross multiply
   1,309,405x = 2,818,928 × 2,818,928
4. Step 4: Simplify right side
   1,309,405x = 7,946,355,069,184
5. Step 5: Solve for x
   x = 7,946,355,069,184/1,309,405
6. Step 6: Final answer
   x = 6,068,676.28