Finding the Third Proportional to 840,172 and 1,843,642

Step by Step Solution

1. Step 1: Write the proportion equation
   840,172 : 1,843,642 = 1,843,642 : x
2. Step 2: Convert to fraction form
   840,172/1,843,642 = 1,843,642/x
3. Step 3: Cross multiply
   840,172x = 1,843,642 × 1,843,642
4. Step 4: Simplify right side
   840,172x = 3,399,015,824,164
5. Step 5: Solve for x
   x = 3,399,015,824,164/840,172
6. Step 6: Final answer
   x = 4,045,619.02