Finding the Third Proportional to 48,870 and 87,561

Step by Step Solution

1. Step 1: Write the proportion equation
   48,870 : 87,561 = 87,561 : x
2. Step 2: Convert to fraction form
   48,870/87,561 = 87,561/x
3. Step 3: Cross multiply
   48,870x = 87,561 × 87,561
4. Step 4: Simplify right side
   48,870x = 7,666,928,721
5. Step 5: Solve for x
   x = 7,666,928,721/48,870
6. Step 6: Final answer
   x = 156,884.16