Finding the Third Proportional to 478,815 and 1,028,191

Step by Step Solution

1. Step 1: Write the proportion equation
   478,815 : 1,028,191 = 1,028,191 : x
2. Step 2: Convert to fraction form
   478,815/1,028,191 = 1,028,191/x
3. Step 3: Cross multiply
   478,815x = 1,028,191 × 1,028,191
4. Step 4: Simplify right side
   478,815x = 1,057,176,732,481
5. Step 5: Solve for x
   x = 1,057,176,732,481/478,815
6. Step 6: Final answer
   x = 2,207,902.28