Finding the Third Proportional to 54,606 and 87,061

Step by Step Solution

1. Step 1: Write the proportion equation
   54,606 : 87,061 = 87,061 : x
2. Step 2: Convert to fraction form
   54,606/87,061 = 87,061/x
3. Step 3: Cross multiply
   54,606x = 87,061 × 87,061
4. Step 4: Simplify right side
   54,606x = 7,579,617,721
5. Step 5: Solve for x
   x = 7,579,617,721/54,606
6. Step 6: Final answer
   x = 138,805.58