Finding the Third Proportional to 99,724.50 and 134,356.50

Step by Step Solution

1. Step 1: Write the proportion equation
   99,724.50 : 134,356.50 = 134,356.50 : x
2. Step 2: Convert to fraction form
   99,724.50/134,356.50 = 134,356.50/x
3. Step 3: Cross multiply
   99,724.50x = 134,356.50 × 134,356.50
4. Step 4: Simplify right side
   99,724.50x = 18,051,669,092.25
5. Step 5: Solve for x
   x = 18,051,669,092.25/99,724.50
6. Step 6: Final answer
   x = 181,015.39