Finding the Third Proportional to 1,239,878 and 1,915,061

Step by Step Solution

1. Step 1: Write the proportion equation
   1,239,878 : 1,915,061 = 1,915,061 : x
2. Step 2: Convert to fraction form
   1,239,878/1,915,061 = 1,915,061/x
3. Step 3: Cross multiply
   1,239,878x = 1,915,061 × 1,915,061
4. Step 4: Simplify right side
   1,239,878x = 3,667,458,633,721
5. Step 5: Solve for x
   x = 3,667,458,633,721/1,239,878
6. Step 6: Final answer
   x = 2,957,918.95