Finding the Third Proportional to 60,072,273 and 128,647,480.50

Step by Step Solution

1. Step 1: Write the proportion equation
   60,072,273 : 128,647,480.50 = 128,647,480.50 : x
2. Step 2: Convert to fraction form
   60,072,273/128,647,480.50 = 128,647,480.50/x
3. Step 3: Cross multiply
   60,072,273x = 128,647,480.50 × 128,647,480.50
4. Step 4: Simplify right side
   60,072,273x = 16,550,174,238,997,880
5. Step 5: Solve for x
   x = 16,550,174,238,997,880/60,072,273
6. Step 6: Final answer
   x = 275,504,378.52