Finding the Third Proportional to 2,143,382 and 4,623,288

Step by Step Solution

1. Step 1: Write the proportion equation
   2,143,382 : 4,623,288 = 4,623,288 : x
2. Step 2: Convert to fraction form
   2,143,382/4,623,288 = 4,623,288/x
3. Step 3: Cross multiply
   2,143,382x = 4,623,288 × 4,623,288
4. Step 4: Simplify right side
   2,143,382x = 21,374,791,930,944
5. Step 5: Solve for x
   x = 21,374,791,930,944/2,143,382
6. Step 6: Final answer
   x = 9,972,460.31