Finding the Third Proportional to 1,686,420 and 2,214,135

Step by Step Solution

1. Step 1: Write the proportion equation
   1,686,420 : 2,214,135 = 2,214,135 : x
2. Step 2: Convert to fraction form
   1,686,420/2,214,135 = 2,214,135/x
3. Step 3: Cross multiply
   1,686,420x = 2,214,135 × 2,214,135
4. Step 4: Simplify right side
   1,686,420x = 4,902,393,798,225
5. Step 5: Solve for x
   x = 4,902,393,798,225/1,686,420
6. Step 6: Final answer
   x = 2,906,982.72