Finding the Third Proportional to 1,109,820 and 1,661,691

Step by Step Solution

1. Step 1: Write the proportion equation
   1,109,820 : 1,661,691 = 1,661,691 : x
2. Step 2: Convert to fraction form
   1,109,820/1,661,691 = 1,661,691/x
3. Step 3: Cross multiply
   1,109,820x = 1,661,691 × 1,661,691
4. Step 4: Simplify right side
   1,109,820x = 2,761,216,979,481
5. Step 5: Solve for x
   x = 2,761,216,979,481/1,109,820
6. Step 6: Final answer
   x = 2,487,986.32