Finding the Third Proportional to 128,719,431,946 and 277,111,200,020

Step by Step Solution

1. Step 1: Write the proportion equation
   128,719,431,946 : 277,111,200,020 = 277,111,200,020 : x
2. Step 2: Convert to fraction form
   128,719,431,946/277,111,200,020 = 277,111,200,020/x
3. Step 3: Cross multiply
   128,719,431,946x = 277,111,200,020 × 277,111,200,020
4. Step 4: Simplify right side
   128,719,431,946x = 76,790,617,176,524,455,936,000
5. Step 5: Solve for x
   x = 76,790,617,176,524,455,936,000/128,719,431,946
6. Step 6: Final answer
   x = 596,573,617,639.48