Finding the Third Proportional to 361,395 and 778,288.50

Step by Step Solution

1. Step 1: Write the proportion equation
   361,395 : 778,288.50 = 778,288.50 : x
2. Step 2: Convert to fraction form
   361,395/778,288.50 = 778,288.50/x
3. Step 3: Cross multiply
   361,395x = 778,288.50 × 778,288.50
4. Step 4: Simplify right side
   361,395x = 605,732,989,232.25
5. Step 5: Solve for x
   x = 605,732,989,232.25/361,395
6. Step 6: Final answer
   x = 1,676,096.76