Finding the Third Proportional to 2,143,372 and 4,623,268

Step by Step Solution

1. Step 1: Write the proportion equation
   2,143,372 : 4,623,268 = 4,623,268 : x
2. Step 2: Convert to fraction form
   2,143,372/4,623,268 = 4,623,268/x
3. Step 3: Cross multiply
   2,143,372x = 4,623,268 × 4,623,268
4. Step 4: Simplify right side
   2,143,372x = 21,374,606,999,824
5. Step 5: Solve for x
   x = 21,374,606,999,824/2,143,372
6. Step 6: Final answer
   x = 9,972,420.56