Finding the Third Proportional to 389,155.50 and 852,122

Step by Step Solution

1. Step 1: Write the proportion equation
   389,155.50 : 852,122 = 852,122 : x
2. Step 2: Convert to fraction form
   389,155.50/852,122 = 852,122/x
3. Step 3: Cross multiply
   389,155.50x = 852,122 × 852,122
4. Step 4: Simplify right side
   389,155.50x = 726,111,902,884
5. Step 5: Solve for x
   x = 726,111,902,884/389,155.50
6. Step 6: Final answer
   x = 1,865,865.71