Finding the Third Proportional to 1,009,555 and 2,159,186

Step by Step Solution

1. Step 1: Write the proportion equation
   1,009,555 : 2,159,186 = 2,159,186 : x
2. Step 2: Convert to fraction form
   1,009,555/2,159,186 = 2,159,186/x
3. Step 3: Cross multiply
   1,009,555x = 2,159,186 × 2,159,186
4. Step 4: Simplify right side
   1,009,555x = 4,662,084,182,596
5. Step 5: Solve for x
   x = 4,662,084,182,596/1,009,555
6. Step 6: Final answer
   x = 4,617,959.58