Finding the Third Proportional to 279,811 and 610,844.50

Step by Step Solution

1. Step 1: Write the proportion equation
   279,811 : 610,844.50 = 610,844.50 : x
2. Step 2: Convert to fraction form
   279,811/610,844.50 = 610,844.50/x
3. Step 3: Cross multiply
   279,811x = 610,844.50 × 610,844.50
4. Step 4: Simplify right side
   279,811x = 373,131,003,180.25
5. Step 5: Solve for x
   x = 373,131,003,180.25/279,811
6. Step 6: Final answer
   x = 1,333,510.85