Finding the Third Proportional to 12,485,642,310 and 18,039,597,005.25

Step by Step Solution

1. Step 1: Write the proportion equation
   12,485,642,310 : 18,039,597,005.25 = 18,039,597,005.25 : x
2. Step 2: Convert to fraction form
   12,485,642,310/18,039,597,005.25 = 18,039,597,005.25/x
3. Step 3: Cross multiply
   12,485,642,310x = 18,039,597,005.25 × 18,039,597,005.25
4. Step 4: Simplify right side
   12,485,642,310x = 325,427,060,111,824,781,312
5. Step 5: Solve for x
   x = 325,427,060,111,824,781,312/12,485,642,310
6. Step 6: Final answer
   x = 26,064,102,433.18