Finding the Third Proportional to 388,914 and 583,377.75

Step by Step Solution

1. Step 1: Write the proportion equation
   388,914 : 583,377.75 = 583,377.75 : x
2. Step 2: Convert to fraction form
   388,914/583,377.75 = 583,377.75/x
3. Step 3: Cross multiply
   388,914x = 583,377.75 × 583,377.75
4. Step 4: Simplify right side
   388,914x = 340,329,599,195.06
5. Step 5: Solve for x
   x = 340,329,599,195.06/388,914
6. Step 6: Final answer
   x = 875,076.75