Finding the Third Proportional to 1,223,832 and 1,720,380

Step by Step Solution

1. Step 1: Write the proportion equation
   1,223,832 : 1,720,380 = 1,720,380 : x
2. Step 2: Convert to fraction form
   1,223,832/1,720,380 = 1,720,380/x
3. Step 3: Cross multiply
   1,223,832x = 1,720,380 × 1,720,380
4. Step 4: Simplify right side
   1,223,832x = 2,959,707,344,400
5. Step 5: Solve for x
   x = 2,959,707,344,400/1,223,832
6. Step 6: Final answer
   x = 2,418,393.49