Finding the Third Proportional to 143,160 and 189,288

Step by Step Solution

1. Step 1: Write the proportion equation
   143,160 : 189,288 = 189,288 : x
2. Step 2: Convert to fraction form
   143,160/189,288 = 189,288/x
3. Step 3: Cross multiply
   143,160x = 189,288 × 189,288
4. Step 4: Simplify right side
   143,160x = 35,829,946,944
5. Step 5: Solve for x
   x = 35,829,946,944/143,160
6. Step 6: Final answer
   x = 250,279.04