Finding the Third Proportional to 143,068 and 212,910

Step by Step Solution

1. Step 1: Write the proportion equation
   143,068 : 212,910 = 212,910 : x
2. Step 2: Convert to fraction form
   143,068/212,910 = 212,910/x
3. Step 3: Cross multiply
   143,068x = 212,910 × 212,910
4. Step 4: Simplify right side
   143,068x = 45,330,668,100
5. Step 5: Solve for x
   x = 45,330,668,100/143,068
6. Step 6: Final answer
   x = 316,847.01