Finding the Third Proportional to 389,112 and 852,034

Step by Step Solution

1. Step 1: Write the proportion equation
   389,112 : 852,034 = 852,034 : x
2. Step 2: Convert to fraction form
   389,112/852,034 = 852,034/x
3. Step 3: Cross multiply
   389,112x = 852,034 × 852,034
4. Step 4: Simplify right side
   389,112x = 725,961,937,156
5. Step 5: Solve for x
   x = 725,961,937,156/389,112
6. Step 6: Final answer
   x = 1,865,688.89