Finding the Third Proportional to 91,018 and 142,472

Step by Step Solution

1. Step 1: Write the proportion equation
   91,018 : 142,472 = 142,472 : x
2. Step 2: Convert to fraction form
   91,018/142,472 = 142,472/x
3. Step 3: Cross multiply
   91,018x = 142,472 × 142,472
4. Step 4: Simplify right side
   91,018x = 20,298,270,784
5. Step 5: Solve for x
   x = 20,298,270,784/91,018
6. Step 6: Final answer
   x = 223,013.81