Finding the Third Proportional to 2,021,432 and 4,422,672

Step by Step Solution

1. Step 1: Write the proportion equation
   2,021,432 : 4,422,672 = 4,422,672 : x
2. Step 2: Convert to fraction form
   2,021,432/4,422,672 = 4,422,672/x
3. Step 3: Cross multiply
   2,021,432x = 4,422,672 × 4,422,672
4. Step 4: Simplify right side
   2,021,432x = 19,560,027,619,584
5. Step 5: Solve for x
   x = 19,560,027,619,584/2,021,432
6. Step 6: Final answer
   x = 9,676,322.34