Finding the Third Proportional to 1,643,122 and 2,197,815

Step by Step Solution

1. Step 1: Write the proportion equation
   1,643,122 : 2,197,815 = 2,197,815 : x
2. Step 2: Convert to fraction form
   1,643,122/2,197,815 = 2,197,815/x
3. Step 3: Cross multiply
   1,643,122x = 2,197,815 × 2,197,815
4. Step 4: Simplify right side
   1,643,122x = 4,830,390,774,225
5. Step 5: Solve for x
   x = 4,830,390,774,225/1,643,122
6. Step 6: Final answer
   x = 2,939,763.92