Finding the Third Proportional to 3,686,124,974 and 8,123,599,630

Step by Step Solution

1. Step 1: Write the proportion equation
   3,686,124,974 : 8,123,599,630 = 8,123,599,630 : x
2. Step 2: Convert to fraction form
   3,686,124,974/8,123,599,630 = 8,123,599,630/x
3. Step 3: Cross multiply
   3,686,124,974x = 8,123,599,630 × 8,123,599,630
4. Step 4: Simplify right side
   3,686,124,974x = 65,992,870,948,536,139,776
5. Step 5: Solve for x
   x = 65,992,870,948,536,139,776/3,686,124,974
6. Step 6: Final answer
   x = 17,903,047,621.56