Finding the Third Proportional to 1,009,138 and 1,681,831

Step by Step Solution

1. Step 1: Write the proportion equation
   1,009,138 : 1,681,831 = 1,681,831 : x
2. Step 2: Convert to fraction form
   1,009,138/1,681,831 = 1,681,831/x
3. Step 3: Cross multiply
   1,009,138x = 1,681,831 × 1,681,831
4. Step 4: Simplify right side
   1,009,138x = 2,828,555,512,561
5. Step 5: Solve for x
   x = 2,828,555,512,561/1,009,138
6. Step 6: Final answer
   x = 2,802,942.23