Finding the Third Proportional to 66,162 and 86,530.50

Step by Step Solution

1. Step 1: Write the proportion equation
   66,162 : 86,530.50 = 86,530.50 : x
2. Step 2: Convert to fraction form
   66,162/86,530.50 = 86,530.50/x
3. Step 3: Cross multiply
   66,162x = 86,530.50 × 86,530.50
4. Step 4: Simplify right side
   66,162x = 7,487,527,430.25
5. Step 5: Solve for x
   x = 7,487,527,430.25/66,162
6. Step 6: Final answer
   x = 113,169.61