Finding the Third Proportional to 61,418 and 90,105

Step by Step Solution

1. Step 1: Write the proportion equation
   61,418 : 90,105 = 90,105 : x
2. Step 2: Convert to fraction form
   61,418/90,105 = 90,105/x
3. Step 3: Cross multiply
   61,418x = 90,105 × 90,105
4. Step 4: Simplify right side
   61,418x = 8,118,911,025
5. Step 5: Solve for x
   x = 8,118,911,025/61,418
6. Step 6: Final answer
   x = 132,191.07