Finding the Third Proportional to 45,262.50 and 99,439.50

Step by Step Solution

1. Step 1: Write the proportion equation
   45,262.50 : 99,439.50 = 99,439.50 : x
2. Step 2: Convert to fraction form
   45,262.50/99,439.50 = 99,439.50/x
3. Step 3: Cross multiply
   45,262.50x = 99,439.50 × 99,439.50
4. Step 4: Simplify right side
   45,262.50x = 9,888,214,160.25
5. Step 5: Solve for x
   x = 9,888,214,160.25/45,262.50
6. Step 6: Final answer
   x = 218,463.72