Finding the Third Proportional to 1,921,656 and 4,448,172

Step by Step Solution

1. Step 1: Write the proportion equation
   1,921,656 : 4,448,172 = 4,448,172 : x
2. Step 2: Convert to fraction form
   1,921,656/4,448,172 = 4,448,172/x
3. Step 3: Cross multiply
   1,921,656x = 4,448,172 × 4,448,172
4. Step 4: Simplify right side
   1,921,656x = 19,786,234,141,584
5. Step 5: Solve for x
   x = 19,786,234,141,584/1,921,656
6. Step 6: Final answer
   x = 10,296,449.59