Finding the Third Proportional to 65,452 and 142,490

Step by Step Solution

1. Step 1: Write the proportion equation
   65,452 : 142,490 = 142,490 : x
2. Step 2: Convert to fraction form
   65,452/142,490 = 142,490/x
3. Step 3: Cross multiply
   65,452x = 142,490 × 142,490
4. Step 4: Simplify right side
   65,452x = 20,303,400,100
5. Step 5: Solve for x
   x = 20,303,400,100/65,452
6. Step 6: Final answer
   x = 310,202.90