Finding the Third Proportional to 702,986 and 1,089,435

Step by Step Solution

1. Step 1: Write the proportion equation
   702,986 : 1,089,435 = 1,089,435 : x
2. Step 2: Convert to fraction form
   702,986/1,089,435 = 1,089,435/x
3. Step 3: Cross multiply
   702,986x = 1,089,435 × 1,089,435
4. Step 4: Simplify right side
   702,986x = 1,186,868,619,225
5. Step 5: Solve for x
   x = 1,186,868,619,225/702,986
6. Step 6: Final answer
   x = 1,688,324.69