Finding the Third Proportional to 726,368 and 1,200,432

Step by Step Solution

1. Step 1: Write the proportion equation
   726,368 : 1,200,432 = 1,200,432 : x
2. Step 2: Convert to fraction form
   726,368/1,200,432 = 1,200,432/x
3. Step 3: Cross multiply
   726,368x = 1,200,432 × 1,200,432
4. Step 4: Simplify right side
   726,368x = 1,441,036,986,624
5. Step 5: Solve for x
   x = 1,441,036,986,624/726,368
6. Step 6: Final answer
   x = 1,983,893.82