Finding the Third Proportional to 1,155,467 and 1,690,412

Step by Step Solution

1. Step 1: Write the proportion equation
   1,155,467 : 1,690,412 = 1,690,412 : x
2. Step 2: Convert to fraction form
   1,155,467/1,690,412 = 1,690,412/x
3. Step 3: Cross multiply
   1,155,467x = 1,690,412 × 1,690,412
4. Step 4: Simplify right side
   1,155,467x = 2,857,492,729,744
5. Step 5: Solve for x
   x = 2,857,492,729,744/1,155,467
6. Step 6: Final answer
   x = 2,473,019.77