Finding the Third Proportional to 2,790,632 and 4,206,396

Step by Step Solution

1. Step 1: Write the proportion equation
   2,790,632 : 4,206,396 = 4,206,396 : x
2. Step 2: Convert to fraction form
   2,790,632/4,206,396 = 4,206,396/x
3. Step 3: Cross multiply
   2,790,632x = 4,206,396 × 4,206,396
4. Step 4: Simplify right side
   2,790,632x = 17,693,767,308,816
5. Step 5: Solve for x
   x = 17,693,767,308,816/2,790,632
6. Step 6: Final answer
   x = 6,340,415.83