Finding the Third Proportional to 1,919,414 and 4,200,412

Step by Step Solution

1. Step 1: Write the proportion equation
   1,919,414 : 4,200,412 = 4,200,412 : x
2. Step 2: Convert to fraction form
   1,919,414/4,200,412 = 4,200,412/x
3. Step 3: Cross multiply
   1,919,414x = 4,200,412 × 4,200,412
4. Step 4: Simplify right side
   1,919,414x = 17,643,460,969,744
5. Step 5: Solve for x
   x = 17,643,460,969,744/1,919,414
6. Step 6: Final answer
   x = 9,192,108.10