Finding the Third Proportional to 128,334,476 and 277,123,240

Step by Step Solution

1. Step 1: Write the proportion equation
   128,334,476 : 277,123,240 = 277,123,240 : x
2. Step 2: Convert to fraction form
   128,334,476/277,123,240 = 277,123,240/x
3. Step 3: Cross multiply
   128,334,476x = 277,123,240 × 277,123,240
4. Step 4: Simplify right side
   128,334,476x = 76,797,290,148,097,600
5. Step 5: Solve for x
   x = 76,797,290,148,097,600/128,334,476
6. Step 6: Final answer
   x = 598,415,114.49