Finding the Third Proportional to 779,800 and 1,178,196

Step by Step Solution

1. Step 1: Write the proportion equation
   779,800 : 1,178,196 = 1,178,196 : x
2. Step 2: Convert to fraction form
   779,800/1,178,196 = 1,178,196/x
3. Step 3: Cross multiply
   779,800x = 1,178,196 × 1,178,196
4. Step 4: Simplify right side
   779,800x = 1,388,145,814,416
5. Step 5: Solve for x
   x = 1,388,145,814,416/779,800
6. Step 6: Final answer
   x = 1,780,130.56