Finding the Third Proportional to 385,084 and 858,710.75

Step by Step Solution

1. Step 1: Write the proportion equation
   385,084 : 858,710.75 = 858,710.75 : x
2. Step 2: Convert to fraction form
   385,084/858,710.75 = 858,710.75/x
3. Step 3: Cross multiply
   385,084x = 858,710.75 × 858,710.75
4. Step 4: Simplify right side
   385,084x = 737,384,152,165.56
5. Step 5: Solve for x
   x = 737,384,152,165.56/385,084
6. Step 6: Final answer
   x = 1,914,865.72