Finding the Third Proportional to 615,216 and 1,317,910

Step by Step Solution

1. Step 1: Write the proportion equation
   615,216 : 1,317,910 = 1,317,910 : x
2. Step 2: Convert to fraction form
   615,216/1,317,910 = 1,317,910/x
3. Step 3: Cross multiply
   615,216x = 1,317,910 × 1,317,910
4. Step 4: Simplify right side
   615,216x = 1,736,886,768,100
5. Step 5: Solve for x
   x = 1,736,886,768,100/615,216
6. Step 6: Final answer
   x = 2,823,214.56