Finding the Third Proportional to 839,130 and 1,290,548

Step by Step Solution

1. Step 1: Write the proportion equation
   839,130 : 1,290,548 = 1,290,548 : x
2. Step 2: Convert to fraction form
   839,130/1,290,548 = 1,290,548/x
3. Step 3: Cross multiply
   839,130x = 1,290,548 × 1,290,548
4. Step 4: Simplify right side
   839,130x = 1,665,514,140,304
5. Step 5: Solve for x
   x = 1,665,514,140,304/839,130
6. Step 6: Final answer
   x = 1,984,810.63