Finding the Third Proportional to 45,687.50 and 72,905.50

Step by Step Solution

1. Step 1: Write the proportion equation
   45,687.50 : 72,905.50 = 72,905.50 : x
2. Step 2: Convert to fraction form
   45,687.50/72,905.50 = 72,905.50/x
3. Step 3: Cross multiply
   45,687.50x = 72,905.50 × 72,905.50
4. Step 4: Simplify right side
   45,687.50x = 5,315,211,930.25
5. Step 5: Solve for x
   x = 5,315,211,930.25/45,687.50
6. Step 6: Final answer
   x = 116,338.43