Finding the Third Proportional to 59,656.50 and 128,658

Step by Step Solution

1. Step 1: Write the proportion equation
   59,656.50 : 128,658 = 128,658 : x
2. Step 2: Convert to fraction form
   59,656.50/128,658 = 128,658/x
3. Step 3: Cross multiply
   59,656.50x = 128,658 × 128,658
4. Step 4: Simplify right side
   59,656.50x = 16,552,880,964
5. Step 5: Solve for x
   x = 16,552,880,964/59,656.50
6. Step 6: Final answer
   x = 277,469.86