Finding the Third Proportional to 519,274 and 801,839

Step by Step Solution

1. Step 1: Write the proportion equation
   519,274 : 801,839 = 801,839 : x
2. Step 2: Convert to fraction form
   519,274/801,839 = 801,839/x
3. Step 3: Cross multiply
   519,274x = 801,839 × 801,839
4. Step 4: Simplify right side
   519,274x = 642,945,781,921
5. Step 5: Solve for x
   x = 642,945,781,921/519,274
6. Step 6: Final answer
   x = 1,238,162.86