Finding the Third Proportional to 60,928 and 91,390

Step by Step Solution

1. Step 1: Write the proportion equation
   60,928 : 91,390 = 91,390 : x
2. Step 2: Convert to fraction form
   60,928/91,390 = 91,390/x
3. Step 3: Cross multiply
   60,928x = 91,390 × 91,390
4. Step 4: Simplify right side
   60,928x = 8,352,132,100
5. Step 5: Solve for x
   x = 8,352,132,100/60,928
6. Step 6: Final answer
   x = 137,082.00