Finding the Third Proportional to 443,611.69 and 664,669.55

Step by Step Solution

1. Step 1: Write the proportion equation
   443,611.69 : 664,669.55 = 664,669.55 : x
2. Step 2: Convert to fraction form
   443,611.69/664,669.55 = 664,669.55/x
3. Step 3: Cross multiply
   443,611.69x = 664,669.55 × 664,669.55
4. Step 4: Simplify right side
   443,611.69x = 441,785,606,543.02
5. Step 5: Solve for x
   x = 441,785,606,543.02/443,611.69
6. Step 6: Final answer
   x = 995,883.60