Finding the Third Proportional to 42,072 and 58,500

Step by Step Solution

1. Step 1: Write the proportion equation
   42,072 : 58,500 = 58,500 : x
2. Step 2: Convert to fraction form
   42,072/58,500 = 58,500/x
3. Step 3: Cross multiply
   42,072x = 58,500 × 58,500
4. Step 4: Simplify right side
   42,072x = 3,422,250,000
5. Step 5: Solve for x
   x = 3,422,250,000/42,072
6. Step 6: Final answer
   x = 81,342.70