Finding the Third Proportional to 59,782.50 and 128,151

Step by Step Solution

1. Step 1: Write the proportion equation
   59,782.50 : 128,151 = 128,151 : x
2. Step 2: Convert to fraction form
   59,782.50/128,151 = 128,151/x
3. Step 3: Cross multiply
   59,782.50x = 128,151 × 128,151
4. Step 4: Simplify right side
   59,782.50x = 16,422,678,801
5. Step 5: Solve for x
   x = 16,422,678,801/59,782.50
6. Step 6: Final answer
   x = 274,707.13