Finding the Third Proportional to 389,102.50 and 852,018.50

Step by Step Solution

1. Step 1: Write the proportion equation
   389,102.50 : 852,018.50 = 852,018.50 : x
2. Step 2: Convert to fraction form
   389,102.50/852,018.50 = 852,018.50/x
3. Step 3: Cross multiply
   389,102.50x = 852,018.50 × 852,018.50
4. Step 4: Simplify right side
   389,102.50x = 725,935,524,342.25
5. Step 5: Solve for x
   x = 725,935,524,342.25/389,102.50
6. Step 6: Final answer
   x = 1,865,666.56