Finding the Third Proportional to 302,977.50 and 659,158.50

Step by Step Solution

1. Step 1: Write the proportion equation
   302,977.50 : 659,158.50 = 659,158.50 : x
2. Step 2: Convert to fraction form
   302,977.50/659,158.50 = 659,158.50/x
3. Step 3: Cross multiply
   302,977.50x = 659,158.50 × 659,158.50
4. Step 4: Simplify right side
   302,977.50x = 434,489,928,122.25
5. Step 5: Solve for x
   x = 434,489,928,122.25/302,977.50
6. Step 6: Final answer
   x = 1,434,066.65