Finding the Third Proportional to 1,203,278 and 1,805,178

Step by Step Solution

1. Step 1: Write the proportion equation
   1,203,278 : 1,805,178 = 1,805,178 : x
2. Step 2: Convert to fraction form
   1,203,278/1,805,178 = 1,805,178/x
3. Step 3: Cross multiply
   1,203,278x = 1,805,178 × 1,805,178
4. Step 4: Simplify right side
   1,203,278x = 3,258,667,611,684
5. Step 5: Solve for x
   x = 3,258,667,611,684/1,203,278
6. Step 6: Final answer
   x = 2,708,158.56