Finding the Third Proportional to 689,536 and 1,071,456

Step by Step Solution

1. Step 1: Write the proportion equation
   689,536 : 1,071,456 = 1,071,456 : x
2. Step 2: Convert to fraction form
   689,536/1,071,456 = 1,071,456/x
3. Step 3: Cross multiply
   689,536x = 1,071,456 × 1,071,456
4. Step 4: Simplify right side
   689,536x = 1,148,017,959,936
5. Step 5: Solve for x
   x = 1,148,017,959,936/689,536
6. Step 6: Final answer
   x = 1,664,913.74