Finding the Third Proportional to 421,540 and 1,015,906

Step by Step Solution

1. Step 1: Write the proportion equation
   421,540 : 1,015,906 = 1,015,906 : x
2. Step 2: Convert to fraction form
   421,540/1,015,906 = 1,015,906/x
3. Step 3: Cross multiply
   421,540x = 1,015,906 × 1,015,906
4. Step 4: Simplify right side
   421,540x = 1,032,065,000,836
5. Step 5: Solve for x
   x = 1,032,065,000,836/421,540
6. Step 6: Final answer
   x = 2,448,320.45