Finding the Third Proportional to 1,379,072 and 2,142,912

Step by Step Solution

1. Step 1: Write the proportion equation
   1,379,072 : 2,142,912 = 2,142,912 : x
2. Step 2: Convert to fraction form
   1,379,072/2,142,912 = 2,142,912/x
3. Step 3: Cross multiply
   1,379,072x = 2,142,912 × 2,142,912
4. Step 4: Simplify right side
   1,379,072x = 4,592,071,839,744
5. Step 5: Solve for x
   x = 4,592,071,839,744/1,379,072
6. Step 6: Final answer
   x = 3,329,827.48