Finding the Third Proportional to 389,111.63 and 852,034.50

Step by Step Solution

1. Step 1: Write the proportion equation
   389,111.63 : 852,034.50 = 852,034.50 : x
2. Step 2: Convert to fraction form
   389,111.63/852,034.50 = 852,034.50/x
3. Step 3: Cross multiply
   389,111.63x = 852,034.50 × 852,034.50
4. Step 4: Simplify right side
   389,111.63x = 725,962,789,190.25
5. Step 5: Solve for x
   x = 725,962,789,190.25/389,111.63
6. Step 6: Final answer
   x = 1,865,692.88