Finding the Third Proportional to 775,722 and 1,200,447

Step by Step Solution

1. Step 1: Write the proportion equation
   775,722 : 1,200,447 = 1,200,447 : x
2. Step 2: Convert to fraction form
   775,722/1,200,447 = 1,200,447/x
3. Step 3: Cross multiply
   775,722x = 1,200,447 × 1,200,447
4. Step 4: Simplify right side
   775,722x = 1,441,072,999,809
5. Step 5: Solve for x
   x = 1,441,072,999,809/775,722
6. Step 6: Final answer
   x = 1,857,718.36