Finding the Third Proportional to 1,919,541 and 4,200,666

Step by Step Solution

1. Step 1: Write the proportion equation
   1,919,541 : 4,200,666 = 4,200,666 : x
2. Step 2: Convert to fraction form
   1,919,541/4,200,666 = 4,200,666/x
3. Step 3: Cross multiply
   1,919,541x = 4,200,666 × 4,200,666
4. Step 4: Simplify right side
   1,919,541x = 17,645,594,843,556
5. Step 5: Solve for x
   x = 17,645,594,843,556/1,919,541
6. Step 6: Final answer
   x = 9,192,611.59