Finding the Third Proportional to 643,325 and 946,272.50

Step by Step Solution

1. Step 1: Write the proportion equation
   643,325 : 946,272.50 = 946,272.50 : x
2. Step 2: Convert to fraction form
   643,325/946,272.50 = 946,272.50/x
3. Step 3: Cross multiply
   643,325x = 946,272.50 × 946,272.50
4. Step 4: Simplify right side
   643,325x = 895,431,644,256.25
5. Step 5: Solve for x
   x = 895,431,644,256.25/643,325
6. Step 6: Final answer
   x = 1,391,880.69