Finding the Third Proportional to 64,975 and 142,358.50

Step by Step Solution

1. Step 1: Write the proportion equation
   64,975 : 142,358.50 = 142,358.50 : x
2. Step 2: Convert to fraction form
   64,975/142,358.50 = 142,358.50/x
3. Step 3: Cross multiply
   64,975x = 142,358.50 × 142,358.50
4. Step 4: Simplify right side
   64,975x = 20,265,942,522.25
5. Step 5: Solve for x
   x = 20,265,942,522.25/64,975
6. Step 6: Final answer
   x = 311,903.69