Finding the Third Proportional to 408,787.50 and 879,729

Step by Step Solution

1. Step 1: Write the proportion equation
   408,787.50 : 879,729 = 879,729 : x
2. Step 2: Convert to fraction form
   408,787.50/879,729 = 879,729/x
3. Step 3: Cross multiply
   408,787.50x = 879,729 × 879,729
4. Step 4: Simplify right side
   408,787.50x = 773,923,113,441
5. Step 5: Solve for x
   x = 773,923,113,441/408,787.50
6. Step 6: Final answer
   x = 1,893,216.19