Finding the Third Proportional to 389,610 and 582,846.75

Step by Step Solution

1. Step 1: Write the proportion equation
   389,610 : 582,846.75 = 582,846.75 : x
2. Step 2: Convert to fraction form
   389,610/582,846.75 = 582,846.75/x
3. Step 3: Cross multiply
   389,610x = 582,846.75 × 582,846.75
4. Step 4: Simplify right side
   389,610x = 339,710,333,985.56
5. Step 5: Solve for x
   x = 339,710,333,985.56/389,610
6. Step 6: Final answer
   x = 871,924.06