Finding the Third Proportional to 1,821,168 and 2,672,688

Step by Step Solution

1. Step 1: Write the proportion equation
   1,821,168 : 2,672,688 = 2,672,688 : x
2. Step 2: Convert to fraction form
   1,821,168/2,672,688 = 2,672,688/x
3. Step 3: Cross multiply
   1,821,168x = 2,672,688 × 2,672,688
4. Step 4: Simplify right side
   1,821,168x = 7,143,261,145,344
5. Step 5: Solve for x
   x = 7,143,261,145,344/1,821,168
6. Step 6: Final answer
   x = 3,922,351.56