Finding the Third Proportional to 65,276 and 142,990

Step by Step Solution

1. Step 1: Write the proportion equation
   65,276 : 142,990 = 142,990 : x
2. Step 2: Convert to fraction form
   65,276/142,990 = 142,990/x
3. Step 3: Cross multiply
   65,276x = 142,990 × 142,990
4. Step 4: Simplify right side
   65,276x = 20,446,140,100
5. Step 5: Solve for x
   x = 20,446,140,100/65,276
6. Step 6: Final answer
   x = 313,226.00