Finding the Third Proportional to 45,251.50 and 99,424.50

Step by Step Solution

1. Step 1: Write the proportion equation
   45,251.50 : 99,424.50 = 99,424.50 : x
2. Step 2: Convert to fraction form
   45,251.50/99,424.50 = 99,424.50/x
3. Step 3: Cross multiply
   45,251.50x = 99,424.50 × 99,424.50
4. Step 4: Simplify right side
   45,251.50x = 9,885,231,200.25
5. Step 5: Solve for x
   x = 9,885,231,200.25/45,251.50
6. Step 6: Final answer
   x = 218,450.91