Finding the Third Proportional to 702,938 and 1,089,400

Step by Step Solution

1. Step 1: Write the proportion equation
   702,938 : 1,089,400 = 1,089,400 : x
2. Step 2: Convert to fraction form
   702,938/1,089,400 = 1,089,400/x
3. Step 3: Cross multiply
   702,938x = 1,089,400 × 1,089,400
4. Step 4: Simplify right side
   702,938x = 1,186,792,360,000
5. Step 5: Solve for x
   x = 1,186,792,360,000/702,938
6. Step 6: Final answer
   x = 1,688,331.49