Finding the Third Proportional to 309,783.50 and 452,782.50

Step by Step Solution

1. Step 1: Write the proportion equation
   309,783.50 : 452,782.50 = 452,782.50 : x
2. Step 2: Convert to fraction form
   309,783.50/452,782.50 = 452,782.50/x
3. Step 3: Cross multiply
   309,783.50x = 452,782.50 × 452,782.50
4. Step 4: Simplify right side
   309,783.50x = 205,011,992,306.25
5. Step 5: Solve for x
   x = 205,011,992,306.25/309,783.50
6. Step 6: Final answer
   x = 661,791.19