Finding the Third Proportional to 68,404.50 and 109,258.88

Step by Step Solution

1. Step 1: Write the proportion equation
   68,404.50 : 109,258.88 = 109,258.88 : x
2. Step 2: Convert to fraction form
   68,404.50/109,258.88 = 109,258.88/x
3. Step 3: Cross multiply
   68,404.50x = 109,258.88 × 109,258.88
4. Step 4: Simplify right side
   68,404.50x = 11,937,501,766.27
5. Step 5: Solve for x
   x = 11,937,501,766.27/68,404.50
6. Step 6: Final answer
   x = 174,513.40