Finding the Third Proportional to 561,026 and 789,123

Step by Step Solution

1. Step 1: Write the proportion equation
   561,026 : 789,123 = 789,123 : x
2. Step 2: Convert to fraction form
   561,026/789,123 = 789,123/x
3. Step 3: Cross multiply
   561,026x = 789,123 × 789,123
4. Step 4: Simplify right side
   561,026x = 622,715,109,129
5. Step 5: Solve for x
   x = 622,715,109,129/561,026
6. Step 6: Final answer
   x = 1,109,957.67