Finding the Third Proportional to 689,736 and 1,064,126

Step by Step Solution

1. Step 1: Write the proportion equation
   689,736 : 1,064,126 = 1,064,126 : x
2. Step 2: Convert to fraction form
   689,736/1,064,126 = 1,064,126/x
3. Step 3: Cross multiply
   689,736x = 1,064,126 × 1,064,126
4. Step 4: Simplify right side
   689,736x = 1,132,364,143,876
5. Step 5: Solve for x
   x = 1,132,364,143,876/689,736
6. Step 6: Final answer
   x = 1,641,735.60