Finding the Third Proportional to 1,919,392 and 4,200,368

Step by Step Solution

1. Step 1: Write the proportion equation
   1,919,392 : 4,200,368 = 4,200,368 : x
2. Step 2: Convert to fraction form
   1,919,392/4,200,368 = 4,200,368/x
3. Step 3: Cross multiply
   1,919,392x = 4,200,368 × 4,200,368
4. Step 4: Simplify right side
   1,919,392x = 17,643,091,335,424
5. Step 5: Solve for x
   x = 17,643,091,335,424/1,919,392
6. Step 6: Final answer
   x = 9,192,020.88