Finding the Third Proportional to 60,328 and 91,790

Step by Step Solution

1. Step 1: Write the proportion equation
   60,328 : 91,790 = 91,790 : x
2. Step 2: Convert to fraction form
   60,328/91,790 = 91,790/x
3. Step 3: Cross multiply
   60,328x = 91,790 × 91,790
4. Step 4: Simplify right side
   60,328x = 8,425,404,100
5. Step 5: Solve for x
   x = 8,425,404,100/60,328
6. Step 6: Final answer
   x = 139,659.93