Finding the Third Proportional to 65,479 and 142,956

Step by Step Solution

1. Step 1: Write the proportion equation
   65,479 : 142,956 = 142,956 : x
2. Step 2: Convert to fraction form
   65,479/142,956 = 142,956/x
3. Step 3: Cross multiply
   65,479x = 142,956 × 142,956
4. Step 4: Simplify right side
   65,479x = 20,436,417,936
5. Step 5: Solve for x
   x = 20,436,417,936/65,479
6. Step 6: Final answer
   x = 312,106.45