Finding the Third Proportional to 1,447,399 and 2,128,997

Step by Step Solution

1. Step 1: Write the proportion equation
   1,447,399 : 2,128,997 = 2,128,997 : x
2. Step 2: Convert to fraction form
   1,447,399/2,128,997 = 2,128,997/x
3. Step 3: Cross multiply
   1,447,399x = 2,128,997 × 2,128,997
4. Step 4: Simplify right side
   1,447,399x = 4,532,628,226,009
5. Step 5: Solve for x
   x = 4,532,628,226,009/1,447,399
6. Step 6: Final answer
   x = 3,131,567.89