Finding the Third Proportional to 68,709 and 109,297.50

Step by Step Solution

1. Step 1: Write the proportion equation
   68,709 : 109,297.50 = 109,297.50 : x
2. Step 2: Convert to fraction form
   68,709/109,297.50 = 109,297.50/x
3. Step 3: Cross multiply
   68,709x = 109,297.50 × 109,297.50
4. Step 4: Simplify right side
   68,709x = 11,945,943,506.25
5. Step 5: Solve for x
   x = 11,945,943,506.25/68,709
6. Step 6: Final answer
   x = 173,862.86