Finding the Third Proportional to 72,474 and 105,561.75

Step by Step Solution

1. Step 1: Write the proportion equation
   72,474 : 105,561.75 = 105,561.75 : x
2. Step 2: Convert to fraction form
   72,474/105,561.75 = 105,561.75/x
3. Step 3: Cross multiply
   72,474x = 105,561.75 × 105,561.75
4. Step 4: Simplify right side
   72,474x = 11,143,283,063.06
5. Step 5: Solve for x
   x = 11,143,283,063.06/72,474
6. Step 6: Final answer
   x = 153,755.60