Finding the Third Proportional to 86,148.56 and 189,286.88

Step by Step Solution

1. Step 1: Write the proportion equation
   86,148.56 : 189,286.88 = 189,286.88 : x
2. Step 2: Convert to fraction form
   86,148.56/189,286.88 = 189,286.88/x
3. Step 3: Cross multiply
   86,148.56x = 189,286.88 × 189,286.88
4. Step 4: Simplify right side
   86,148.56x = 35,829,521,047.27
5. Step 5: Solve for x
   x = 35,829,521,047.27/86,148.56
6. Step 6: Final answer
   x = 415,903.88