Finding the Third Proportional to 305,811 and 650,986.50

Step by Step Solution

1. Step 1: Write the proportion equation
   305,811 : 650,986.50 = 650,986.50 : x
2. Step 2: Convert to fraction form
   305,811/650,986.50 = 650,986.50/x
3. Step 3: Cross multiply
   305,811x = 650,986.50 × 650,986.50
4. Step 4: Simplify right side
   305,811x = 423,783,423,182.25
5. Step 5: Solve for x
   x = 423,783,423,182.25/305,811
6. Step 6: Final answer
   x = 1,385,769.06