Finding the Third Proportional to 1,939,827 and 4,215,378

Step by Step Solution

1. Step 1: Write the proportion equation
   1,939,827 : 4,215,378 = 4,215,378 : x
2. Step 2: Convert to fraction form
   1,939,827/4,215,378 = 4,215,378/x
3. Step 3: Cross multiply
   1,939,827x = 4,215,378 × 4,215,378
4. Step 4: Simplify right side
   1,939,827x = 17,769,411,682,884
5. Step 5: Solve for x
   x = 17,769,411,682,884/1,939,827
6. Step 6: Final answer
   x = 9,160,307.43