Finding the Third Proportional to 1,912,418 and 4,172,570

Step by Step Solution

1. Step 1: Write the proportion equation
   1,912,418 : 4,172,570 = 4,172,570 : x
2. Step 2: Convert to fraction form
   1,912,418/4,172,570 = 4,172,570/x
3. Step 3: Cross multiply
   1,912,418x = 4,172,570 × 4,172,570
4. Step 4: Simplify right side
   1,912,418x = 17,410,340,404,900
5. Step 5: Solve for x
   x = 17,410,340,404,900/1,912,418
6. Step 6: Final answer
   x = 9,103,836.30