Finding the Third Proportional to 1,919,394 and 4,200,372

Step by Step Solution

1. Step 1: Write the proportion equation
   1,919,394 : 4,200,372 = 4,200,372 : x
2. Step 2: Convert to fraction form
   1,919,394/4,200,372 = 4,200,372/x
3. Step 3: Cross multiply
   1,919,394x = 4,200,372 × 4,200,372
4. Step 4: Simplify right side
   1,919,394x = 17,643,124,938,384
5. Step 5: Solve for x
   x = 17,643,124,938,384/1,919,394
6. Step 6: Final answer
   x = 9,192,028.81