Finding the Third Proportional to 871,200 and 1,868,458.50

Step by Step Solution

1. Step 1: Write the proportion equation
   871,200 : 1,868,458.50 = 1,868,458.50 : x
2. Step 2: Convert to fraction form
   871,200/1,868,458.50 = 1,868,458.50/x
3. Step 3: Cross multiply
   871,200x = 1,868,458.50 × 1,868,458.50
4. Step 4: Simplify right side
   871,200x = 3,491,137,166,222.25
5. Step 5: Solve for x
   x = 3,491,137,166,222.25/871,200
6. Step 6: Final answer
   x = 4,007,274.07