Finding the Third Proportional to 59,106.50 and 90,427

Step by Step Solution

1. Step 1: Write the proportion equation
   59,106.50 : 90,427 = 90,427 : x
2. Step 2: Convert to fraction form
   59,106.50/90,427 = 90,427/x
3. Step 3: Cross multiply
   59,106.50x = 90,427 × 90,427
4. Step 4: Simplify right side
   59,106.50x = 8,177,042,329
5. Step 5: Solve for x
   x = 8,177,042,329/59,106.50
6. Step 6: Final answer
   x = 138,344.21