Finding the Third Proportional to 631,128 and 1,371,120

Step by Step Solution

1. Step 1: Write the proportion equation
   631,128 : 1,371,120 = 1,371,120 : x
2. Step 2: Convert to fraction form
   631,128/1,371,120 = 1,371,120/x
3. Step 3: Cross multiply
   631,128x = 1,371,120 × 1,371,120
4. Step 4: Simplify right side
   631,128x = 1,879,970,054,400
5. Step 5: Solve for x
   x = 1,879,970,054,400/631,128
6. Step 6: Final answer
   x = 2,978,746.08