Finding the Third Proportional to 142,163 and 301,820

Step by Step Solution

1. Step 1: Write the proportion equation
   142,163 : 301,820 = 301,820 : x
2. Step 2: Convert to fraction form
   142,163/301,820 = 301,820/x
3. Step 3: Cross multiply
   142,163x = 301,820 × 301,820
4. Step 4: Simplify right side
   142,163x = 91,095,312,400
5. Step 5: Solve for x
   x = 91,095,312,400/142,163
6. Step 6: Final answer
   x = 640,780.74