Finding the Third Proportional to 91,072.50 and 142,560.75

Step by Step Solution

1. Step 1: Write the proportion equation
   91,072.50 : 142,560.75 = 142,560.75 : x
2. Step 2: Convert to fraction form
   91,072.50/142,560.75 = 142,560.75/x
3. Step 3: Cross multiply
   91,072.50x = 142,560.75 × 142,560.75
4. Step 4: Simplify right side
   91,072.50x = 20,323,567,440.56
5. Step 5: Solve for x
   x = 20,323,567,440.56/91,072.50
6. Step 6: Final answer
   x = 223,158.12