Finding the Third Proportional to 86,919 and 134,513.50

Step by Step Solution

1. Step 1: Write the proportion equation
   86,919 : 134,513.50 = 134,513.50 : x
2. Step 2: Convert to fraction form
   86,919/134,513.50 = 134,513.50/x
3. Step 3: Cross multiply
   86,919x = 134,513.50 × 134,513.50
4. Step 4: Simplify right side
   86,919x = 18,093,881,682.25
5. Step 5: Solve for x
   x = 18,093,881,682.25/86,919
6. Step 6: Final answer
   x = 208,169.46