Finding the Third Proportional to 503,640 and 786,096

Step by Step Solution

1. Step 1: Write the proportion equation
   503,640 : 786,096 = 786,096 : x
2. Step 2: Convert to fraction form
   503,640/786,096 = 786,096/x
3. Step 3: Cross multiply
   503,640x = 786,096 × 786,096
4. Step 4: Simplify right side
   503,640x = 617,946,921,216
5. Step 5: Solve for x
   x = 617,946,921,216/503,640
6. Step 6: Final answer
   x = 1,226,961.56