Finding the Third Proportional to 68,626.50 and 99,109.50

Step by Step Solution

1. Step 1: Write the proportion equation
   68,626.50 : 99,109.50 = 99,109.50 : x
2. Step 2: Convert to fraction form
   68,626.50/99,109.50 = 99,109.50/x
3. Step 3: Cross multiply
   68,626.50x = 99,109.50 × 99,109.50
4. Step 4: Simplify right side
   68,626.50x = 9,822,692,990.25
5. Step 5: Solve for x
   x = 9,822,692,990.25/68,626.50
6. Step 6: Final answer
   x = 143,132.65