Finding the Third Proportional to 8,756,509,787.86 and 13,077,383,969.81

Step by Step Solution

1. Step 1: Write the proportion equation
   8,756,509,787.86 : 13,077,383,969.81 = 13,077,383,969.81 : x
2. Step 2: Convert to fraction form
   8,756,509,787.86/13,077,383,969.81 = 13,077,383,969.81/x
3. Step 3: Cross multiply
   8,756,509,787.86x = 13,077,383,969.81 × 13,077,383,969.81
4. Step 4: Simplify right side
   8,756,509,787.86x = 171,017,971,493,895,864,320
5. Step 5: Solve for x
   x = 171,017,971,493,895,864,320/8,756,509,787.86
6. Step 6: Final answer
   x = 19,530,380,897.99