Finding the Third Proportional to 59,809.50 and 128,835

Step by Step Solution

1. Step 1: Write the proportion equation
   59,809.50 : 128,835 = 128,835 : x
2. Step 2: Convert to fraction form
   59,809.50/128,835 = 128,835/x
3. Step 3: Cross multiply
   59,809.50x = 128,835 × 128,835
4. Step 4: Simplify right side
   59,809.50x = 16,598,457,225
5. Step 5: Solve for x
   x = 16,598,457,225/59,809.50
6. Step 6: Final answer
   x = 277,522.09