Finding the Third Proportional to 68,791.50 and 109,453.50

Step by Step Solution

1. Step 1: Write the proportion equation
   68,791.50 : 109,453.50 = 109,453.50 : x
2. Step 2: Convert to fraction form
   68,791.50/109,453.50 = 109,453.50/x
3. Step 3: Cross multiply
   68,791.50x = 109,453.50 × 109,453.50
4. Step 4: Simplify right side
   68,791.50x = 11,980,068,662.25
5. Step 5: Solve for x
   x = 11,980,068,662.25/68,791.50
6. Step 6: Final answer
   x = 174,150.42