Finding the Third Proportional to 689,916 and 1,076,836

Step by Step Solution

1. Step 1: Write the proportion equation
   689,916 : 1,076,836 = 1,076,836 : x
2. Step 2: Convert to fraction form
   689,916/1,076,836 = 1,076,836/x
3. Step 3: Cross multiply
   689,916x = 1,076,836 × 1,076,836
4. Step 4: Simplify right side
   689,916x = 1,159,575,770,896
5. Step 5: Solve for x
   x = 1,159,575,770,896/689,916
6. Step 6: Final answer
   x = 1,680,749.21