Finding the Third Proportional to 59,440 and 89,172

Step by Step Solution

1. Step 1: Write the proportion equation
   59,440 : 89,172 = 89,172 : x
2. Step 2: Convert to fraction form
   59,440/89,172 = 89,172/x
3. Step 3: Cross multiply
   59,440x = 89,172 × 89,172
4. Step 4: Simplify right side
   59,440x = 7,951,645,584
5. Step 5: Solve for x
   x = 7,951,645,584/59,440
6. Step 6: Final answer
   x = 133,776.00