Finding the Third Proportional to 59,970 and 90,105

Step by Step Solution

1. Step 1: Write the proportion equation
   59,970 : 90,105 = 90,105 : x
2. Step 2: Convert to fraction form
   59,970/90,105 = 90,105/x
3. Step 3: Cross multiply
   59,970x = 90,105 × 90,105
4. Step 4: Simplify right side
   59,970x = 8,118,911,025
5. Step 5: Solve for x
   x = 8,118,911,025/59,970
6. Step 6: Final answer
   x = 135,382.88