Finding the Third Proportional to 60,920 and 86,928

Step by Step Solution

1. Step 1: Write the proportion equation
   60,920 : 86,928 = 86,928 : x
2. Step 2: Convert to fraction form
   60,920/86,928 = 86,928/x
3. Step 3: Cross multiply
   60,920x = 86,928 × 86,928
4. Step 4: Simplify right side
   60,920x = 7,556,477,184
5. Step 5: Solve for x
   x = 7,556,477,184/60,920
6. Step 6: Final answer
   x = 124,039.35