Finding the Third Proportional to 59,287,260 and 128,469,777

Step by Step Solution

1. Step 1: Write the proportion equation
   59,287,260 : 128,469,777 = 128,469,777 : x
2. Step 2: Convert to fraction form
   59,287,260/128,469,777 = 128,469,777/x
3. Step 3: Cross multiply
   59,287,260x = 128,469,777 × 128,469,777
4. Step 4: Simplify right side
   59,287,260x = 16,504,483,602,429,728
5. Step 5: Solve for x
   x = 16,504,483,602,429,728/59,287,260
6. Step 6: Final answer
   x = 278,381,621.99