Finding the Third Proportional to 143,132 and 210,322

Step by Step Solution

1. Step 1: Write the proportion equation
   143,132 : 210,322 = 210,322 : x
2. Step 2: Convert to fraction form
   143,132/210,322 = 210,322/x
3. Step 3: Cross multiply
   143,132x = 210,322 × 210,322
4. Step 4: Simplify right side
   143,132x = 44,235,343,684
5. Step 5: Solve for x
   x = 44,235,343,684/143,132
6. Step 6: Final answer
   x = 309,052.79