Finding the Third Proportional to 1,253,489 and 1,909,610

Step by Step Solution

1. Step 1: Write the proportion equation
   1,253,489 : 1,909,610 = 1,909,610 : x
2. Step 2: Convert to fraction form
   1,253,489/1,909,610 = 1,909,610/x
3. Step 3: Cross multiply
   1,253,489x = 1,909,610 × 1,909,610
4. Step 4: Simplify right side
   1,253,489x = 3,646,610,352,100
5. Step 5: Solve for x
   x = 3,646,610,352,100/1,253,489
6. Step 6: Final answer
   x = 2,909,168.21