Finding the Third Proportional to 559,915 and 1,213,142

Step by Step Solution

1. Step 1: Write the proportion equation
   559,915 : 1,213,142 = 1,213,142 : x
2. Step 2: Convert to fraction form
   559,915/1,213,142 = 1,213,142/x
3. Step 3: Cross multiply
   559,915x = 1,213,142 × 1,213,142
4. Step 4: Simplify right side
   559,915x = 1,471,713,512,164
5. Step 5: Solve for x
   x = 1,471,713,512,164/559,915
6. Step 6: Final answer
   x = 2,628,458.81