Finding the Third Proportional to 5,078,841,448.78 and 10,620,771,467.91

Step by Step Solution

1. Step 1: Write the proportion equation
   5,078,841,448.78 : 10,620,771,467.91 = 10,620,771,467.91 : x
2. Step 2: Convert to fraction form
   5,078,841,448.78/10,620,771,467.91 = 10,620,771,467.91/x
3. Step 3: Cross multiply
   5,078,841,448.78x = 10,620,771,467.91 × 10,620,771,467.91
4. Step 4: Simplify right side
   5,078,841,448.78x = 112,800,786,573,486,178,304
5. Step 5: Solve for x
   x = 112,800,786,573,486,178,304/5,078,841,448.78
6. Step 6: Final answer
   x = 22,209,944,474.75