Finding the Third Proportional to 727,920 and 1,575,072

Step by Step Solution

1. Step 1: Write the proportion equation
   727,920 : 1,575,072 = 1,575,072 : x
2. Step 2: Convert to fraction form
   727,920/1,575,072 = 1,575,072/x
3. Step 3: Cross multiply
   727,920x = 1,575,072 × 1,575,072
4. Step 4: Simplify right side
   727,920x = 2,480,851,805,184
5. Step 5: Solve for x
   x = 2,480,851,805,184/727,920
6. Step 6: Final answer
   x = 3,408,137.99