Finding the Third Proportional to 539,400 and 818,941.50

Step by Step Solution

1. Step 1: Write the proportion equation
   539,400 : 818,941.50 = 818,941.50 : x
2. Step 2: Convert to fraction form
   539,400/818,941.50 = 818,941.50/x
3. Step 3: Cross multiply
   539,400x = 818,941.50 × 818,941.50
4. Step 4: Simplify right side
   539,400x = 670,665,180,422.25
5. Step 5: Solve for x
   x = 670,665,180,422.25/539,400
6. Step 6: Final answer
   x = 1,243,354.06