Finding the Third Proportional to 1,296,321 and 1,867,398

Step by Step Solution

1. Step 1: Write the proportion equation
   1,296,321 : 1,867,398 = 1,867,398 : x
2. Step 2: Convert to fraction form
   1,296,321/1,867,398 = 1,867,398/x
3. Step 3: Cross multiply
   1,296,321x = 1,867,398 × 1,867,398
4. Step 4: Simplify right side
   1,296,321x = 3,487,175,290,404
5. Step 5: Solve for x
   x = 3,487,175,290,404/1,296,321
6. Step 6: Final answer
   x = 2,690,055.39