Finding the Third Proportional to 631,296 and 1,379,072

Step by Step Solution

1. Step 1: Write the proportion equation
   631,296 : 1,379,072 = 1,379,072 : x
2. Step 2: Convert to fraction form
   631,296/1,379,072 = 1,379,072/x
3. Step 3: Cross multiply
   631,296x = 1,379,072 × 1,379,072
4. Step 4: Simplify right side
   631,296x = 1,901,839,581,184
5. Step 5: Solve for x
   x = 1,901,839,581,184/631,296
6. Step 6: Final answer
   x = 3,012,595.65