Finding the Third Proportional to 42,930 and 87,072.75

Step by Step Solution

1. Step 1: Write the proportion equation
   42,930 : 87,072.75 = 87,072.75 : x
2. Step 2: Convert to fraction form
   42,930/87,072.75 = 87,072.75/x
3. Step 3: Cross multiply
   42,930x = 87,072.75 × 87,072.75
4. Step 4: Simplify right side
   42,930x = 7,581,663,792.56
5. Step 5: Solve for x
   x = 7,581,663,792.56/42,930
6. Step 6: Final answer
   x = 176,605.26