Finding the Third Proportional to 86,060.81 and 120,977.72

Step by Step Solution

1. Step 1: Write the proportion equation
   86,060.81 : 120,977.72 = 120,977.72 : x
2. Step 2: Convert to fraction form
   86,060.81/120,977.72 = 120,977.72/x
3. Step 3: Cross multiply
   86,060.81x = 120,977.72 × 120,977.72
4. Step 4: Simplify right side
   86,060.81x = 14,635,608,433.95
5. Step 5: Solve for x
   x = 14,635,608,433.95/86,060.81
6. Step 6: Final answer
   x = 170,061.24