Finding the Third Proportional to 12,485,642,312.25 and 18,039,597,008.63

Step by Step Solution

1. Step 1: Write the proportion equation
   12,485,642,312.25 : 18,039,597,008.63 = 18,039,597,008.63 : x
2. Step 2: Convert to fraction form
   12,485,642,312.25/18,039,597,008.63 = 18,039,597,008.63/x
3. Step 3: Cross multiply
   12,485,642,312.25x = 18,039,597,008.63 × 18,039,597,008.63
4. Step 4: Simplify right side
   12,485,642,312.25x = 325,427,060,233,592,045,568
5. Step 5: Solve for x
   x = 325,427,060,233,592,045,568/12,485,642,312.25
6. Step 6: Final answer
   x = 26,064,102,438.23