Finding the Third Proportional to 57,261.94 and 86,518.13

Step by Step Solution

1. Step 1: Write the proportion equation
   57,261.94 : 86,518.13 = 86,518.13 : x
2. Step 2: Convert to fraction form
   57,261.94/86,518.13 = 86,518.13/x
3. Step 3: Cross multiply
   57,261.94x = 86,518.13 × 86,518.13
4. Step 4: Simplify right side
   57,261.94x = 7,485,385,953.52
5. Step 5: Solve for x
   x = 7,485,385,953.52/57,261.94
6. Step 6: Final answer
   x = 130,721.84