Finding the Third Proportional to 721,103 and 1,120,986

Step by Step Solution

1. Step 1: Write the proportion equation
   721,103 : 1,120,986 = 1,120,986 : x
2. Step 2: Convert to fraction form
   721,103/1,120,986 = 1,120,986/x
3. Step 3: Cross multiply
   721,103x = 1,120,986 × 1,120,986
4. Step 4: Simplify right side
   721,103x = 1,256,609,612,196
5. Step 5: Solve for x
   x = 1,256,609,612,196/721,103
6. Step 6: Final answer
   x = 1,742,621.53