Finding the Third Proportional to 2,012,912 and 4,399,072

Step by Step Solution

1. Step 1: Write the proportion equation
   2,012,912 : 4,399,072 = 4,399,072 : x
2. Step 2: Convert to fraction form
   2,012,912/4,399,072 = 4,399,072/x
3. Step 3: Cross multiply
   2,012,912x = 4,399,072 × 4,399,072
4. Step 4: Simplify right side
   2,012,912x = 19,351,834,461,184
5. Step 5: Solve for x
   x = 19,351,834,461,184/2,012,912
6. Step 6: Final answer
   x = 9,613,850.21