Finding the Third Proportional to 56,960.50 and 86,290

Step by Step Solution

1. Step 1: Write the proportion equation
   56,960.50 : 86,290 = 86,290 : x
2. Step 2: Convert to fraction form
   56,960.50/86,290 = 86,290/x
3. Step 3: Cross multiply
   56,960.50x = 86,290 × 86,290
4. Step 4: Simplify right side
   56,960.50x = 7,445,964,100
5. Step 5: Solve for x
   x = 7,445,964,100/56,960.50
6. Step 6: Final answer
   x = 130,721.54