Finding the Third Proportional to 207,223.31 and 309,556.69

Step by Step Solution

1. Step 1: Write the proportion equation
   207,223.31 : 309,556.69 = 309,556.69 : x
2. Step 2: Convert to fraction form
   207,223.31/309,556.69 = 309,556.69/x
3. Step 3: Cross multiply
   207,223.31x = 309,556.69 × 309,556.69
4. Step 4: Simplify right side
   207,223.31x = 95,825,342,775.97
5. Step 5: Solve for x
   x = 95,825,342,775.97/207,223.31
6. Step 6: Final answer
   x = 462,425.49