Finding the Third Proportional to 1,919,619 and 4,200,822

Step by Step Solution

1. Step 1: Write the proportion equation
   1,919,619 : 4,200,822 = 4,200,822 : x
2. Step 2: Convert to fraction form
   1,919,619/4,200,822 = 4,200,822/x
3. Step 3: Cross multiply
   1,919,619x = 4,200,822 × 4,200,822
4. Step 4: Simplify right side
   1,919,619x = 17,646,905,475,684
5. Step 5: Solve for x
   x = 17,646,905,475,684/1,919,619
6. Step 6: Final answer
   x = 9,192,920.82