Finding the Third Proportional to 459,573 and 689,845.50

Step by Step Solution

1. Step 1: Write the proportion equation
   459,573 : 689,845.50 = 689,845.50 : x
2. Step 2: Convert to fraction form
   459,573/689,845.50 = 689,845.50/x
3. Step 3: Cross multiply
   459,573x = 689,845.50 × 689,845.50
4. Step 4: Simplify right side
   459,573x = 475,886,813,870.25
5. Step 5: Solve for x
   x = 475,886,813,870.25/459,573
6. Step 6: Final answer
   x = 1,035,497.76