Finding the Third Proportional to 1,017,015 and 1,381,221

Step by Step Solution

1. Step 1: Write the proportion equation
   1,017,015 : 1,381,221 = 1,381,221 : x
2. Step 2: Convert to fraction form
   1,017,015/1,381,221 = 1,381,221/x
3. Step 3: Cross multiply
   1,017,015x = 1,381,221 × 1,381,221
4. Step 4: Simplify right side
   1,017,015x = 1,907,771,450,841
5. Step 5: Solve for x
   x = 1,907,771,450,841/1,017,015
6. Step 6: Final answer
   x = 1,875,853.80