Finding the Third Proportional to 598,869 and 880,789.50

Step by Step Solution

1. Step 1: Write the proportion equation
   598,869 : 880,789.50 = 880,789.50 : x
2. Step 2: Convert to fraction form
   598,869/880,789.50 = 880,789.50/x
3. Step 3: Cross multiply
   598,869x = 880,789.50 × 880,789.50
4. Step 4: Simplify right side
   598,869x = 775,790,143,310.25
5. Step 5: Solve for x
   x = 775,790,143,310.25/598,869
6. Step 6: Final answer
   x = 1,295,425.45