Finding the Third Proportional to 2,172,645 and 3,192,439

Step by Step Solution

1. Step 1: Write the proportion equation
   2,172,645 : 3,192,439 = 3,192,439 : x
2. Step 2: Convert to fraction form
   2,172,645/3,192,439 = 3,192,439/x
3. Step 3: Cross multiply
   2,172,645x = 3,192,439 × 3,192,439
4. Step 4: Simplify right side
   2,172,645x = 10,191,666,768,721
5. Step 5: Solve for x
   x = 10,191,666,768,721/2,172,645
6. Step 6: Final answer
   x = 4,690,902.92