Finding the Third Proportional to 1,155,462 and 1,690,398

Step by Step Solution

1. Step 1: Write the proportion equation
   1,155,462 : 1,690,398 = 1,690,398 : x
2. Step 2: Convert to fraction form
   1,155,462/1,690,398 = 1,690,398/x
3. Step 3: Cross multiply
   1,155,462x = 1,690,398 × 1,690,398
4. Step 4: Simplify right side
   1,155,462x = 2,857,445,398,404
5. Step 5: Solve for x
   x = 2,857,445,398,404/1,155,462
6. Step 6: Final answer
   x = 2,472,989.50