Finding the Third Proportional to 1,316,240 and 1,990,561

Step by Step Solution

1. Step 1: Write the proportion equation
   1,316,240 : 1,990,561 = 1,990,561 : x
2. Step 2: Convert to fraction form
   1,316,240/1,990,561 = 1,990,561/x
3. Step 3: Cross multiply
   1,316,240x = 1,990,561 × 1,990,561
4. Step 4: Simplify right side
   1,316,240x = 3,962,333,094,721
5. Step 5: Solve for x
   x = 3,962,333,094,721/1,316,240
6. Step 6: Final answer
   x = 3,010,342.41