Finding the Third Proportional to 615,212 and 1,317,902

Step by Step Solution

1. Step 1: Write the proportion equation
   615,212 : 1,317,902 = 1,317,902 : x
2. Step 2: Convert to fraction form
   615,212/1,317,902 = 1,317,902/x
3. Step 3: Cross multiply
   615,212x = 1,317,902 × 1,317,902
4. Step 4: Simplify right side
   615,212x = 1,736,865,681,604
5. Step 5: Solve for x
   x = 1,736,865,681,604/615,212
6. Step 6: Final answer
   x = 2,823,198.64