Finding the Third Proportional to 991,936 and 2,161,020

Step by Step Solution

1. Step 1: Write the proportion equation
   991,936 : 2,161,020 = 2,161,020 : x
2. Step 2: Convert to fraction form
   991,936/2,161,020 = 2,161,020/x
3. Step 3: Cross multiply
   991,936x = 2,161,020 × 2,161,020
4. Step 4: Simplify right side
   991,936x = 4,670,007,440,400
5. Step 5: Solve for x
   x = 4,670,007,440,400/991,936
6. Step 6: Final answer
   x = 4,707,972.53