Finding the Third Proportional to 65,672 and 140,560

Step by Step Solution

1. Step 1: Write the proportion equation
   65,672 : 140,560 = 140,560 : x
2. Step 2: Convert to fraction form
   65,672/140,560 = 140,560/x
3. Step 3: Cross multiply
   65,672x = 140,560 × 140,560
4. Step 4: Simplify right side
   65,672x = 19,757,113,600
5. Step 5: Solve for x
   x = 19,757,113,600/65,672
6. Step 6: Final answer
   x = 300,845.32