Finding the Third Proportional to 422,869 and 887,256.50

Step by Step Solution

1. Step 1: Write the proportion equation
   422,869 : 887,256.50 = 887,256.50 : x
2. Step 2: Convert to fraction form
   422,869/887,256.50 = 887,256.50/x
3. Step 3: Cross multiply
   422,869x = 887,256.50 × 887,256.50
4. Step 4: Simplify right side
   422,869x = 787,224,096,792.25
5. Step 5: Solve for x
   x = 787,224,096,792.25/422,869
6. Step 6: Final answer
   x = 1,861,626.41