Finding the Third Proportional to 430,072.50 and 664,812

Step by Step Solution

1. Step 1: Write the proportion equation
   430,072.50 : 664,812 = 664,812 : x
2. Step 2: Convert to fraction form
   430,072.50/664,812 = 664,812/x
3. Step 3: Cross multiply
   430,072.50x = 664,812 × 664,812
4. Step 4: Simplify right side
   430,072.50x = 441,974,995,344
5. Step 5: Solve for x
   x = 441,974,995,344/430,072.50
6. Step 6: Final answer
   x = 1,027,675.56