Finding the Third Proportional to 1,253,520 and 1,909,648

Step by Step Solution

1. Step 1: Write the proportion equation
   1,253,520 : 1,909,648 = 1,909,648 : x
2. Step 2: Convert to fraction form
   1,253,520/1,909,648 = 1,909,648/x
3. Step 3: Cross multiply
   1,253,520x = 1,909,648 × 1,909,648
4. Step 4: Simplify right side
   1,253,520x = 3,646,755,483,904
5. Step 5: Solve for x
   x = 3,646,755,483,904/1,253,520
6. Step 6: Final answer
   x = 2,909,212.05