Finding the Third Proportional to 3,686,124,971.25 and 8,123,599,624.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,686,124,971.25 : 8,123,599,624.50 = 8,123,599,624.50 : x
2. Step 2: Convert to fraction form
   3,686,124,971.25/8,123,599,624.50 = 8,123,599,624.50/x
3. Step 3: Cross multiply
   3,686,124,971.25x = 8,123,599,624.50 × 8,123,599,624.50
4. Step 4: Simplify right side
   3,686,124,971.25x = 65,992,870,859,176,542,208
5. Step 5: Solve for x
   x = 65,992,870,859,176,542,208/3,686,124,971.25
6. Step 6: Final answer
   x = 17,903,047,610.67