Finding the Third Proportional to 65,388 and 141,609

Step by Step Solution

1. Step 1: Write the proportion equation
   65,388 : 141,609 = 141,609 : x
2. Step 2: Convert to fraction form
   65,388/141,609 = 141,609/x
3. Step 3: Cross multiply
   65,388x = 141,609 × 141,609
4. Step 4: Simplify right side
   65,388x = 20,053,108,881
5. Step 5: Solve for x
   x = 20,053,108,881/65,388
6. Step 6: Final answer
   x = 306,678.73