Finding the Third Proportional to 1,296,318 and 2,028,909

Step by Step Solution

1. Step 1: Write the proportion equation
   1,296,318 : 2,028,909 = 2,028,909 : x
2. Step 2: Convert to fraction form
   1,296,318/2,028,909 = 2,028,909/x
3. Step 3: Cross multiply
   1,296,318x = 2,028,909 × 2,028,909
4. Step 4: Simplify right side
   1,296,318x = 4,116,471,730,281
5. Step 5: Solve for x
   x = 4,116,471,730,281/1,296,318
6. Step 6: Final answer
   x = 3,175,510.74