Finding the Third Proportional to 62,478 and 131,928.75

Step by Step Solution

1. Step 1: Write the proportion equation
   62,478 : 131,928.75 = 131,928.75 : x
2. Step 2: Convert to fraction form
   62,478/131,928.75 = 131,928.75/x
3. Step 3: Cross multiply
   62,478x = 131,928.75 × 131,928.75
4. Step 4: Simplify right side
   62,478x = 17,405,195,076.56
5. Step 5: Solve for x
   x = 17,405,195,076.56/62,478
6. Step 6: Final answer
   x = 278,581.18