Finding the Third Proportional to 928,912 and 1,389,912

Step by Step Solution

1. Step 1: Write the proportion equation
   928,912 : 1,389,912 = 1,389,912 : x
2. Step 2: Convert to fraction form
   928,912/1,389,912 = 1,389,912/x
3. Step 3: Cross multiply
   928,912x = 1,389,912 × 1,389,912
4. Step 4: Simplify right side
   928,912x = 1,931,855,367,744
5. Step 5: Solve for x
   x = 1,931,855,367,744/928,912
6. Step 6: Final answer
   x = 2,079,696.86