Finding the Third Proportional to 60,106.50 and 128,551.50

Step by Step Solution

1. Step 1: Write the proportion equation
   60,106.50 : 128,551.50 = 128,551.50 : x
2. Step 2: Convert to fraction form
   60,106.50/128,551.50 = 128,551.50/x
3. Step 3: Cross multiply
   60,106.50x = 128,551.50 × 128,551.50
4. Step 4: Simplify right side
   60,106.50x = 16,525,488,152.25
5. Step 5: Solve for x
   x = 16,525,488,152.25/60,106.50
6. Step 6: Final answer
   x = 274,936.79