Finding the Third Proportional to 703,256 and 1,089,633

Step by Step Solution

1. Step 1: Write the proportion equation
   703,256 : 1,089,633 = 1,089,633 : x
2. Step 2: Convert to fraction form
   703,256/1,089,633 = 1,089,633/x
3. Step 3: Cross multiply
   703,256x = 1,089,633 × 1,089,633
4. Step 4: Simplify right side
   703,256x = 1,187,300,074,689
5. Step 5: Solve for x
   x = 1,187,300,074,689/703,256
6. Step 6: Final answer
   x = 1,688,290.00