Finding the Third Proportional to 443,205 and 664,672.50

Step by Step Solution

1. Step 1: Write the proportion equation
   443,205 : 664,672.50 = 664,672.50 : x
2. Step 2: Convert to fraction form
   443,205/664,672.50 = 664,672.50/x
3. Step 3: Cross multiply
   443,205x = 664,672.50 × 664,672.50
4. Step 4: Simplify right side
   443,205x = 441,789,532,256.25
5. Step 5: Solve for x
   x = 441,789,532,256.25/443,205
6. Step 6: Final answer
   x = 996,806.29