Finding the Third Proportional to 842,138 and 1,294,441

Step by Step Solution

1. Step 1: Write the proportion equation
   842,138 : 1,294,441 = 1,294,441 : x
2. Step 2: Convert to fraction form
   842,138/1,294,441 = 1,294,441/x
3. Step 3: Cross multiply
   842,138x = 1,294,441 × 1,294,441
4. Step 4: Simplify right side
   842,138x = 1,675,577,502,481
5. Step 5: Solve for x
   x = 1,675,577,502,481/842,138
6. Step 6: Final answer
   x = 1,989,670.94