Finding the Third Proportional to 776,269 and 1,178,406

Step by Step Solution

1. Step 1: Write the proportion equation
   776,269 : 1,178,406 = 1,178,406 : x
2. Step 2: Convert to fraction form
   776,269/1,178,406 = 1,178,406/x
3. Step 3: Cross multiply
   776,269x = 1,178,406 × 1,178,406
4. Step 4: Simplify right side
   776,269x = 1,388,640,700,836
5. Step 5: Solve for x
   x = 1,388,640,700,836/776,269
6. Step 6: Final answer
   x = 1,788,865.33