Finding the Third Proportional to 584,132 and 878,790

Step by Step Solution

1. Step 1: Write the proportion equation
   584,132 : 878,790 = 878,790 : x
2. Step 2: Convert to fraction form
   584,132/878,790 = 878,790/x
3. Step 3: Cross multiply
   584,132x = 878,790 × 878,790
4. Step 4: Simplify right side
   584,132x = 772,271,864,100
5. Step 5: Solve for x
   x = 772,271,864,100/584,132
6. Step 6: Final answer
   x = 1,322,084.50