Finding the Third Proportional to 1,243,503 and 1,865,268

Step by Step Solution

1. Step 1: Write the proportion equation
   1,243,503 : 1,865,268 = 1,865,268 : x
2. Step 2: Convert to fraction form
   1,243,503/1,865,268 = 1,865,268/x
3. Step 3: Cross multiply
   1,243,503x = 1,865,268 × 1,865,268
4. Step 4: Simplify right side
   1,243,503x = 3,479,224,711,824
5. Step 5: Solve for x
   x = 3,479,224,711,824/1,243,503
6. Step 6: Final answer
   x = 2,797,922.25