Finding the Third Proportional to 57,126 and 123,972

Step by Step Solution

1. Step 1: Write the proportion equation
   57,126 : 123,972 = 123,972 : x
2. Step 2: Convert to fraction form
   57,126/123,972 = 123,972/x
3. Step 3: Cross multiply
   57,126x = 123,972 × 123,972
4. Step 4: Simplify right side
   57,126x = 15,369,056,784
5. Step 5: Solve for x
   x = 15,369,056,784/57,126
6. Step 6: Final answer
   x = 269,037.86