Finding the Third Proportional to 1,071,689 and 2,311,640

Step by Step Solution

1. Step 1: Write the proportion equation
   1,071,689 : 2,311,640 = 2,311,640 : x
2. Step 2: Convert to fraction form
   1,071,689/2,311,640 = 2,311,640/x
3. Step 3: Cross multiply
   1,071,689x = 2,311,640 × 2,311,640
4. Step 4: Simplify right side
   1,071,689x = 5,343,679,489,600
5. Step 5: Solve for x
   x = 5,343,679,489,600/1,071,689
6. Step 6: Final answer
   x = 4,986,222.21