Finding the Third Proportional to 666,846,974,909.50 and 899,733,141,181.50

Step by Step Solution

1. Step 1: Write the proportion equation
   666,846,974,909.50 : 899,733,141,181.50 = 899,733,141,181.50 : x
2. Step 2: Convert to fraction form
   666,846,974,909.50/899,733,141,181.50 = 899,733,141,181.50/x
3. Step 3: Cross multiply
   666,846,974,909.50x = 899,733,141,181.50 × 899,733,141,181.50
4. Step 4: Simplify right side
   666,846,974,909.50x = 809,519,725,340,329,022,324,736
5. Step 5: Solve for x
   x = 809,519,725,340,329,022,324,736/666,846,974,909.50
6. Step 6: Final answer
   x = 1,213,951,259,882.66