Finding the Third Proportional to 59,505 and 128,805.50

Step by Step Solution

1. Step 1: Write the proportion equation
   59,505 : 128,805.50 = 128,805.50 : x
2. Step 2: Convert to fraction form
   59,505/128,805.50 = 128,805.50/x
3. Step 3: Cross multiply
   59,505x = 128,805.50 × 128,805.50
4. Step 4: Simplify right side
   59,505x = 16,590,856,830.25
5. Step 5: Solve for x
   x = 16,590,856,830.25/59,505
6. Step 6: Final answer
   x = 278,814.50