Finding the Third Proportional to 1,643,120 and 2,197,812

Step by Step Solution

1. Step 1: Write the proportion equation
   1,643,120 : 2,197,812 = 2,197,812 : x
2. Step 2: Convert to fraction form
   1,643,120/2,197,812 = 2,197,812/x
3. Step 3: Cross multiply
   1,643,120x = 2,197,812 × 2,197,812
4. Step 4: Simplify right side
   1,643,120x = 4,830,377,587,344
5. Step 5: Solve for x
   x = 4,830,377,587,344/1,643,120
6. Step 6: Final answer
   x = 2,939,759.47