Finding the Third Proportional to 631,328 and 1,387,072

Step by Step Solution

1. Step 1: Write the proportion equation
   631,328 : 1,387,072 = 1,387,072 : x
2. Step 2: Convert to fraction form
   631,328/1,387,072 = 1,387,072/x
3. Step 3: Cross multiply
   631,328x = 1,387,072 × 1,387,072
4. Step 4: Simplify right side
   631,328x = 1,923,968,733,184
5. Step 5: Solve for x
   x = 1,923,968,733,184/631,328
6. Step 6: Final answer
   x = 3,047,494.70