Finding the Third Proportional to 689,364 and 1,034,774

Step by Step Solution

1. Step 1: Write the proportion equation
   689,364 : 1,034,774 = 1,034,774 : x
2. Step 2: Convert to fraction form
   689,364/1,034,774 = 1,034,774/x
3. Step 3: Cross multiply
   689,364x = 1,034,774 × 1,034,774
4. Step 4: Simplify right side
   689,364x = 1,070,757,231,076
5. Step 5: Solve for x
   x = 1,070,757,231,076/689,364
6. Step 6: Final answer
   x = 1,553,253.77