Finding the Third Proportional to 1,447,398 and 2,128,996

Step by Step Solution

1. Step 1: Write the proportion equation
   1,447,398 : 2,128,996 = 2,128,996 : x
2. Step 2: Convert to fraction form
   1,447,398/2,128,996 = 2,128,996/x
3. Step 3: Cross multiply
   1,447,398x = 2,128,996 × 2,128,996
4. Step 4: Simplify right side
   1,447,398x = 4,532,623,968,016
5. Step 5: Solve for x
   x = 4,532,623,968,016/1,447,398
6. Step 6: Final answer
   x = 3,131,567.11