Finding the Third Proportional to 1,240,836 and 1,990,830

Step by Step Solution

1. Step 1: Write the proportion equation
   1,240,836 : 1,990,830 = 1,990,830 : x
2. Step 2: Convert to fraction form
   1,240,836/1,990,830 = 1,990,830/x
3. Step 3: Cross multiply
   1,240,836x = 1,990,830 × 1,990,830
4. Step 4: Simplify right side
   1,240,836x = 3,963,404,088,900
5. Step 5: Solve for x
   x = 3,963,404,088,900/1,240,836
6. Step 6: Final answer
   x = 3,194,140.15