Finding the Third Proportional to 839,132 and 1,290,553

Step by Step Solution

1. Step 1: Write the proportion equation
   839,132 : 1,290,553 = 1,290,553 : x
2. Step 2: Convert to fraction form
   839,132/1,290,553 = 1,290,553/x
3. Step 3: Cross multiply
   839,132x = 1,290,553 × 1,290,553
4. Step 4: Simplify right side
   839,132x = 1,665,527,045,809
5. Step 5: Solve for x
   x = 1,665,527,045,809/839,132
6. Step 6: Final answer
   x = 1,984,821.27