Finding the Third Proportional to 139,939,820 and 288,822,256

Step by Step Solution

1. Step 1: Write the proportion equation
   139,939,820 : 288,822,256 = 288,822,256 : x
2. Step 2: Convert to fraction form
   139,939,820/288,822,256 = 288,822,256/x
3. Step 3: Cross multiply
   139,939,820x = 288,822,256 × 288,822,256
4. Step 4: Simplify right side
   139,939,820x = 83,418,295,560,929,536
5. Step 5: Solve for x
   x = 83,418,295,560,929,536/139,939,820
6. Step 6: Final answer
   x = 596,101,206.65