Finding the Third Proportional to 839,148 and 1,290,576

Step by Step Solution

1. Step 1: Write the proportion equation
   839,148 : 1,290,576 = 1,290,576 : x
2. Step 2: Convert to fraction form
   839,148/1,290,576 = 1,290,576/x
3. Step 3: Cross multiply
   839,148x = 1,290,576 × 1,290,576
4. Step 4: Simplify right side
   839,148x = 1,665,586,411,776
5. Step 5: Solve for x
   x = 1,665,586,411,776/839,148
6. Step 6: Final answer
   x = 1,984,854.18