Finding the Third Proportional to 142,890 and 301,818

Step by Step Solution

1. Step 1: Write the proportion equation
   142,890 : 301,818 = 301,818 : x
2. Step 2: Convert to fraction form
   142,890/301,818 = 301,818/x
3. Step 3: Cross multiply
   142,890x = 301,818 × 301,818
4. Step 4: Simplify right side
   142,890x = 91,094,105,124
5. Step 5: Solve for x
   x = 91,094,105,124/142,890
6. Step 6: Final answer
   x = 637,512.11