Finding the Third Proportional to 724,728 and 1,085,364

Step by Step Solution

1. Step 1: Write the proportion equation
   724,728 : 1,085,364 = 1,085,364 : x
2. Step 2: Convert to fraction form
   724,728/1,085,364 = 1,085,364/x
3. Step 3: Cross multiply
   724,728x = 1,085,364 × 1,085,364
4. Step 4: Simplify right side
   724,728x = 1,178,015,012,496
5. Step 5: Solve for x
   x = 1,178,015,012,496/724,728
6. Step 6: Final answer
   x = 1,625,458.12