Finding the Third Proportional to 12,651,066,488 and 18,510,904,123

Step by Step Solution

1. Step 1: Write the proportion equation
   12,651,066,488 : 18,510,904,123 = 18,510,904,123 : x
2. Step 2: Convert to fraction form
   12,651,066,488/18,510,904,123 = 18,510,904,123/x
3. Step 3: Cross multiply
   12,651,066,488x = 18,510,904,123 × 18,510,904,123
4. Step 4: Simplify right side
   12,651,066,488x = 342,653,571,450,898,415,616
5. Step 5: Solve for x
   x = 342,653,571,450,898,415,616/12,651,066,488
6. Step 6: Final answer
   x = 27,084,955,389.01