Finding the Third Proportional to 43,613 and 69,172

Step by Step Solution

1. Step 1: Write the proportion equation
   43,613 : 69,172 = 69,172 : x
2. Step 2: Convert to fraction form
   43,613/69,172 = 69,172/x
3. Step 3: Cross multiply
   43,613x = 69,172 × 69,172
4. Step 4: Simplify right side
   43,613x = 4,784,765,584
5. Step 5: Solve for x
   x = 4,784,765,584/43,613
6. Step 6: Final answer
   x = 109,709.62