Finding the Third Proportional to 12,485,642,805 and 18,039,597,733

Step by Step Solution

1. Step 1: Write the proportion equation
   12,485,642,805 : 18,039,597,733 = 18,039,597,733 : x
2. Step 2: Convert to fraction form
   12,485,642,805/18,039,597,733 = 18,039,597,733/x
3. Step 3: Cross multiply
   12,485,642,805x = 18,039,597,733 × 18,039,597,733
4. Step 4: Simplify right side
   12,485,642,805x = 325,427,086,368,458,735,616
5. Step 5: Solve for x
   x = 325,427,086,368,458,735,616/12,485,642,805
6. Step 6: Final answer
   x = 26,064,103,502.80