Finding the Third Proportional to 385,083.50 and 858,710

Step by Step Solution

1. Step 1: Write the proportion equation
   385,083.50 : 858,710 = 858,710 : x
2. Step 2: Convert to fraction form
   385,083.50/858,710 = 858,710/x
3. Step 3: Cross multiply
   385,083.50x = 858,710 × 858,710
4. Step 4: Simplify right side
   385,083.50x = 737,382,864,100
5. Step 5: Solve for x
   x = 737,382,864,100/385,083.50
6. Step 6: Final answer
   x = 1,914,864.86