Finding the Third Proportional to 8,618,817,738.25 and 12,131,905,759.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,618,817,738.25 : 12,131,905,759.50 = 12,131,905,759.50 : x
2. Step 2: Convert to fraction form
   8,618,817,738.25/12,131,905,759.50 = 12,131,905,759.50/x
3. Step 3: Cross multiply
   8,618,817,738.25x = 12,131,905,759.50 × 12,131,905,759.50
4. Step 4: Simplify right side
   8,618,817,738.25x = 147,183,137,357,389,266,944
5. Step 5: Solve for x
   x = 147,183,137,357,389,266,944/8,618,817,738.25
6. Step 6: Final answer
   x = 17,076,952,063.18