Finding the Third Proportional to 858,145 and 1,849,185

Step by Step Solution

1. Step 1: Write the proportion equation
   858,145 : 1,849,185 = 1,849,185 : x
2. Step 2: Convert to fraction form
   858,145/1,849,185 = 1,849,185/x
3. Step 3: Cross multiply
   858,145x = 1,849,185 × 1,849,185
4. Step 4: Simplify right side
   858,145x = 3,419,485,164,225
5. Step 5: Solve for x
   x = 3,419,485,164,225/858,145
6. Step 6: Final answer
   x = 3,984,740.53