Finding the Third Proportional to 1,515,891 and 2,289,632

Step by Step Solution

1. Step 1: Write the proportion equation
   1,515,891 : 2,289,632 = 2,289,632 : x
2. Step 2: Convert to fraction form
   1,515,891/2,289,632 = 2,289,632/x
3. Step 3: Cross multiply
   1,515,891x = 2,289,632 × 2,289,632
4. Step 4: Simplify right side
   1,515,891x = 5,242,414,695,424
5. Step 5: Solve for x
   x = 5,242,414,695,424/1,515,891
6. Step 6: Final answer
   x = 3,458,305.84