Finding the Third Proportional to 68,884.50 and 140,680.50

Step by Step Solution

1. Step 1: Write the proportion equation
   68,884.50 : 140,680.50 = 140,680.50 : x
2. Step 2: Convert to fraction form
   68,884.50/140,680.50 = 140,680.50/x
3. Step 3: Cross multiply
   68,884.50x = 140,680.50 × 140,680.50
4. Step 4: Simplify right side
   68,884.50x = 19,791,003,080.25
5. Step 5: Solve for x
   x = 19,791,003,080.25/68,884.50
6. Step 6: Final answer
   x = 287,307.06