Finding the Third Proportional to 309,790.50 and 452,791.50

Step by Step Solution

1. Step 1: Write the proportion equation
   309,790.50 : 452,791.50 = 452,791.50 : x
2. Step 2: Convert to fraction form
   309,790.50/452,791.50 = 452,791.50/x
3. Step 3: Cross multiply
   309,790.50x = 452,791.50 × 452,791.50
4. Step 4: Simplify right side
   309,790.50x = 205,020,142,472.25
5. Step 5: Solve for x
   x = 205,020,142,472.25/309,790.50
6. Step 6: Final answer
   x = 661,802.55