Finding the Third Proportional to 615,206 and 1,317,890

Step by Step Solution

1. Step 1: Write the proportion equation
   615,206 : 1,317,890 = 1,317,890 : x
2. Step 2: Convert to fraction form
   615,206/1,317,890 = 1,317,890/x
3. Step 3: Cross multiply
   615,206x = 1,317,890 × 1,317,890
4. Step 4: Simplify right side
   615,206x = 1,736,834,052,100
5. Step 5: Solve for x
   x = 1,736,834,052,100/615,206
6. Step 6: Final answer
   x = 2,823,174.76