Finding the Third Proportional to 2,661,984 and 3,991,680

Step by Step Solution

1. Step 1: Write the proportion equation
   2,661,984 : 3,991,680 = 3,991,680 : x
2. Step 2: Convert to fraction form
   2,661,984/3,991,680 = 3,991,680/x
3. Step 3: Cross multiply
   2,661,984x = 3,991,680 × 3,991,680
4. Step 4: Simplify right side
   2,661,984x = 15,933,509,222,400
5. Step 5: Solve for x
   x = 15,933,509,222,400/2,661,984
6. Step 6: Final answer
   x = 5,985,576.63