Finding the Third Proportional to 582,774 and 900,042

Step by Step Solution

1. Step 1: Write the proportion equation
   582,774 : 900,042 = 900,042 : x
2. Step 2: Convert to fraction form
   582,774/900,042 = 900,042/x
3. Step 3: Cross multiply
   582,774x = 900,042 × 900,042
4. Step 4: Simplify right side
   582,774x = 810,075,601,764
5. Step 5: Solve for x
   x = 810,075,601,764/582,774
6. Step 6: Final answer
   x = 1,390,033.88