Finding the Third Proportional to 3,686,124,968 and 8,123,599,620

Step by Step Solution

1. Step 1: Write the proportion equation
   3,686,124,968 : 8,123,599,620 = 8,123,599,620 : x
2. Step 2: Convert to fraction form
   3,686,124,968/8,123,599,620 = 8,123,599,620/x
3. Step 3: Cross multiply
   3,686,124,968x = 8,123,599,620 × 8,123,599,620
4. Step 4: Simplify right side
   3,686,124,968x = 65,992,870,786,064,146,432
5. Step 5: Solve for x
   x = 65,992,870,786,064,146,432/3,686,124,968
6. Step 6: Final answer
   x = 17,903,047,606.62