Finding the Third Proportional to 580,438.50 and 879,436

Step by Step Solution

1. Step 1: Write the proportion equation
   580,438.50 : 879,436 = 879,436 : x
2. Step 2: Convert to fraction form
   580,438.50/879,436 = 879,436/x
3. Step 3: Cross multiply
   580,438.50x = 879,436 × 879,436
4. Step 4: Simplify right side
   580,438.50x = 773,407,678,096
5. Step 5: Solve for x
   x = 773,407,678,096/580,438.50
6. Step 6: Final answer
   x = 1,332,454.13