Finding the Third Proportional to 1,223,822 and 1,720,366

Step by Step Solution

1. Step 1: Write the proportion equation
   1,223,822 : 1,720,366 = 1,720,366 : x
2. Step 2: Convert to fraction form
   1,223,822/1,720,366 = 1,720,366/x
3. Step 3: Cross multiply
   1,223,822x = 1,720,366 × 1,720,366
4. Step 4: Simplify right side
   1,223,822x = 2,959,659,173,956
5. Step 5: Solve for x
   x = 2,959,659,173,956/1,223,822
6. Step 6: Final answer
   x = 2,418,373.89