Finding the Third Proportional to 863,278 and 1,354,231

Step by Step Solution

1. Step 1: Write the proportion equation
   863,278 : 1,354,231 = 1,354,231 : x
2. Step 2: Convert to fraction form
   863,278/1,354,231 = 1,354,231/x
3. Step 3: Cross multiply
   863,278x = 1,354,231 × 1,354,231
4. Step 4: Simplify right side
   863,278x = 1,833,941,601,361
5. Step 5: Solve for x
   x = 1,833,941,601,361/863,278
6. Step 6: Final answer
   x = 2,124,392.84