Finding the Third Proportional to 453,438 and 677,787.75

Step by Step Solution

1. Step 1: Write the proportion equation
   453,438 : 677,787.75 = 677,787.75 : x
2. Step 2: Convert to fraction form
   453,438/677,787.75 = 677,787.75/x
3. Step 3: Cross multiply
   453,438x = 677,787.75 × 677,787.75
4. Step 4: Simplify right side
   453,438x = 459,396,234,050.06
5. Step 5: Solve for x
   x = 459,396,234,050.06/453,438
6. Step 6: Final answer
   x = 1,013,140.13