Finding the Third Proportional to 1,253,516 and 1,909,642

Step by Step Solution

1. Step 1: Write the proportion equation
   1,253,516 : 1,909,642 = 1,909,642 : x
2. Step 2: Convert to fraction form
   1,253,516/1,909,642 = 1,909,642/x
3. Step 3: Cross multiply
   1,253,516x = 1,909,642 × 1,909,642
4. Step 4: Simplify right side
   1,253,516x = 3,646,732,568,164
5. Step 5: Solve for x
   x = 3,646,732,568,164/1,253,516
6. Step 6: Final answer
   x = 2,909,203.05