Finding the Third Proportional to 443,380.50 and 664,158

Step by Step Solution

1. Step 1: Write the proportion equation
   443,380.50 : 664,158 = 664,158 : x
2. Step 2: Convert to fraction form
   443,380.50/664,158 = 664,158/x
3. Step 3: Cross multiply
   443,380.50x = 664,158 × 664,158
4. Step 4: Simplify right side
   443,380.50x = 441,105,848,964
5. Step 5: Solve for x
   x = 441,105,848,964/443,380.50
6. Step 6: Final answer
   x = 994,869.75