Finding the Third Proportional to 1,243,920 and 1,905,192

Step by Step Solution

1. Step 1: Write the proportion equation
   1,243,920 : 1,905,192 = 1,905,192 : x
2. Step 2: Convert to fraction form
   1,243,920/1,905,192 = 1,905,192/x
3. Step 3: Cross multiply
   1,243,920x = 1,905,192 × 1,905,192
4. Step 4: Simplify right side
   1,243,920x = 3,629,756,556,864
5. Step 5: Solve for x
   x = 3,629,756,556,864/1,243,920
6. Step 6: Final answer
   x = 2,917,998.39