Finding the Third Proportional to 64,558 and 141,558

Step by Step Solution

1. Step 1: Write the proportion equation
   64,558 : 141,558 = 141,558 : x
2. Step 2: Convert to fraction form
   64,558/141,558 = 141,558/x
3. Step 3: Cross multiply
   64,558x = 141,558 × 141,558
4. Step 4: Simplify right side
   64,558x = 20,038,667,364
5. Step 5: Solve for x
   x = 20,038,667,364/64,558
6. Step 6: Final answer
   x = 310,397.90