Finding the Third Proportional to 1,409,786 and 2,115,111

Step by Step Solution

1. Step 1: Write the proportion equation
   1,409,786 : 2,115,111 = 2,115,111 : x
2. Step 2: Convert to fraction form
   1,409,786/2,115,111 = 2,115,111/x
3. Step 3: Cross multiply
   1,409,786x = 2,115,111 × 2,115,111
4. Step 4: Simplify right side
   1,409,786x = 4,473,694,542,321
5. Step 5: Solve for x
   x = 4,473,694,542,321/1,409,786
6. Step 6: Final answer
   x = 3,173,314.63