Finding the Third Proportional to 858,720 and 1,129,536

Step by Step Solution

1. Step 1: Write the proportion equation
   858,720 : 1,129,536 = 1,129,536 : x
2. Step 2: Convert to fraction form
   858,720/1,129,536 = 1,129,536/x
3. Step 3: Cross multiply
   858,720x = 1,129,536 × 1,129,536
4. Step 4: Simplify right side
   858,720x = 1,275,851,575,296
5. Step 5: Solve for x
   x = 1,275,851,575,296/858,720
6. Step 6: Final answer
   x = 1,485,759.71