Finding the Third Proportional to 61,401 and 90,087

Step by Step Solution

1. Step 1: Write the proportion equation
   61,401 : 90,087 = 90,087 : x
2. Step 2: Convert to fraction form
   61,401/90,087 = 90,087/x
3. Step 3: Cross multiply
   61,401x = 90,087 × 90,087
4. Step 4: Simplify right side
   61,401x = 8,115,667,569
5. Step 5: Solve for x
   x = 8,115,667,569/61,401
6. Step 6: Final answer
   x = 132,174.84