Finding the Third Proportional to 561,024 and 789,120

Step by Step Solution

1. Step 1: Write the proportion equation
   561,024 : 789,120 = 789,120 : x
2. Step 2: Convert to fraction form
   561,024/789,120 = 789,120/x
3. Step 3: Cross multiply
   561,024x = 789,120 × 789,120
4. Step 4: Simplify right side
   561,024x = 622,710,374,400
5. Step 5: Solve for x
   x = 622,710,374,400/561,024
6. Step 6: Final answer
   x = 1,109,953.18