Finding the Third Proportional to 1,972,112 and 4,143,428

Step by Step Solution

1. Step 1: Write the proportion equation
   1,972,112 : 4,143,428 = 4,143,428 : x
2. Step 2: Convert to fraction form
   1,972,112/4,143,428 = 4,143,428/x
3. Step 3: Cross multiply
   1,972,112x = 4,143,428 × 4,143,428
4. Step 4: Simplify right side
   1,972,112x = 17,167,995,591,184
5. Step 5: Solve for x
   x = 17,167,995,591,184/1,972,112
6. Step 6: Final answer
   x = 8,705,385.69