Finding the Third Proportional to 65,087 and 142,630

Step by Step Solution

1. Step 1: Write the proportion equation
   65,087 : 142,630 = 142,630 : x
2. Step 2: Convert to fraction form
   65,087/142,630 = 142,630/x
3. Step 3: Cross multiply
   65,087x = 142,630 × 142,630
4. Step 4: Simplify right side
   65,087x = 20,343,316,900
5. Step 5: Solve for x
   x = 20,343,316,900/65,087
6. Step 6: Final answer
   x = 312,555.76