Finding the Third Proportional to 128,719,431,936 and 277,111,200,000

Step by Step Solution

1. Step 1: Write the proportion equation
   128,719,431,936 : 277,111,200,000 = 277,111,200,000 : x
2. Step 2: Convert to fraction form
   128,719,431,936/277,111,200,000 = 277,111,200,000/x
3. Step 3: Cross multiply
   128,719,431,936x = 277,111,200,000 × 277,111,200,000
4. Step 4: Simplify right side
   128,719,431,936x = 76,790,617,165,440,000,983,040
5. Step 5: Solve for x
   x = 76,790,617,165,440,000,983,040/128,719,431,936
6. Step 6: Final answer
   x = 596,573,617,599.72