Finding the Third Proportional to 355,039.50 and 764,208

Step by Step Solution

1. Step 1: Write the proportion equation
   355,039.50 : 764,208 = 764,208 : x
2. Step 2: Convert to fraction form
   355,039.50/764,208 = 764,208/x
3. Step 3: Cross multiply
   355,039.50x = 764,208 × 764,208
4. Step 4: Simplify right side
   355,039.50x = 584,013,867,264
5. Step 5: Solve for x
   x = 584,013,867,264/355,039.50
6. Step 6: Final answer
   x = 1,644,926.46