Finding the Third Proportional to 1,306,217 and 2,017,580

Step by Step Solution

1. Step 1: Write the proportion equation
   1,306,217 : 2,017,580 = 2,017,580 : x
2. Step 2: Convert to fraction form
   1,306,217/2,017,580 = 2,017,580/x
3. Step 3: Cross multiply
   1,306,217x = 2,017,580 × 2,017,580
4. Step 4: Simplify right side
   1,306,217x = 4,070,629,056,400
5. Step 5: Solve for x
   x = 4,070,629,056,400/1,306,217
6. Step 6: Final answer
   x = 3,116,349.78