Finding the Third Proportional to 126,914 and 278,928.50

Step by Step Solution

1. Step 1: Write the proportion equation
   126,914 : 278,928.50 = 278,928.50 : x
2. Step 2: Convert to fraction form
   126,914/278,928.50 = 278,928.50/x
3. Step 3: Cross multiply
   126,914x = 278,928.50 × 278,928.50
4. Step 4: Simplify right side
   126,914x = 77,801,108,112.25
5. Step 5: Solve for x
   x = 77,801,108,112.25/126,914
6. Step 6: Final answer
   x = 613,022.27