Finding the Third Proportional to 836,696 and 1,280,172

Step by Step Solution

1. Step 1: Write the proportion equation
   836,696 : 1,280,172 = 1,280,172 : x
2. Step 2: Convert to fraction form
   836,696/1,280,172 = 1,280,172/x
3. Step 3: Cross multiply
   836,696x = 1,280,172 × 1,280,172
4. Step 4: Simplify right side
   836,696x = 1,638,840,349,584
5. Step 5: Solve for x
   x = 1,638,840,349,584/836,696
6. Step 6: Final answer
   x = 1,958,704.65