Finding the Third Proportional to 1,217,036 and 1,891,889

Step by Step Solution

1. Step 1: Write the proportion equation
   1,217,036 : 1,891,889 = 1,891,889 : x
2. Step 2: Convert to fraction form
   1,217,036/1,891,889 = 1,891,889/x
3. Step 3: Cross multiply
   1,217,036x = 1,891,889 × 1,891,889
4. Step 4: Simplify right side
   1,217,036x = 3,579,243,988,321
5. Step 5: Solve for x
   x = 3,579,243,988,321/1,217,036
6. Step 6: Final answer
   x = 2,940,951.61