Finding the Third Proportional to 397,946 and 858,912.50

Step by Step Solution

1. Step 1: Write the proportion equation
   397,946 : 858,912.50 = 858,912.50 : x
2. Step 2: Convert to fraction form
   397,946/858,912.50 = 858,912.50/x
3. Step 3: Cross multiply
   397,946x = 858,912.50 × 858,912.50
4. Step 4: Simplify right side
   397,946x = 737,730,682,656.25
5. Step 5: Solve for x
   x = 737,730,682,656.25/397,946
6. Step 6: Final answer
   x = 1,853,846.21