Finding the Third Proportional to 789,288 and 1,116,864

Step by Step Solution

1. Step 1: Write the proportion equation
   789,288 : 1,116,864 = 1,116,864 : x
2. Step 2: Convert to fraction form
   789,288/1,116,864 = 1,116,864/x
3. Step 3: Cross multiply
   789,288x = 1,116,864 × 1,116,864
4. Step 4: Simplify right side
   789,288x = 1,247,385,194,496
5. Step 5: Solve for x
   x = 1,247,385,194,496/789,288
6. Step 6: Final answer
   x = 1,580,392.95