Finding the Third Proportional to 72,172.50 and 103,961.25

Step by Step Solution

1. Step 1: Write the proportion equation
   72,172.50 : 103,961.25 = 103,961.25 : x
2. Step 2: Convert to fraction form
   72,172.50/103,961.25 = 103,961.25/x
3. Step 3: Cross multiply
   72,172.50x = 103,961.25 × 103,961.25
4. Step 4: Simplify right side
   72,172.50x = 10,807,941,501.56
5. Step 5: Solve for x
   x = 10,807,941,501.56/72,172.50
6. Step 6: Final answer
   x = 149,751.52