Finding the Third Proportional to 1,420,211 and 1,997,620

Step by Step Solution

1. Step 1: Write the proportion equation
   1,420,211 : 1,997,620 = 1,997,620 : x
2. Step 2: Convert to fraction form
   1,420,211/1,997,620 = 1,997,620/x
3. Step 3: Cross multiply
   1,420,211x = 1,997,620 × 1,997,620
4. Step 4: Simplify right side
   1,420,211x = 3,990,485,664,400
5. Step 5: Solve for x
   x = 3,990,485,664,400/1,420,211
6. Step 6: Final answer
   x = 2,809,783.66