Finding the Third Proportional to 585,087,648 and 1,218,603,012

Step by Step Solution

1. Step 1: Write the proportion equation
   585,087,648 : 1,218,603,012 = 1,218,603,012 : x
2. Step 2: Convert to fraction form
   585,087,648/1,218,603,012 = 1,218,603,012/x
3. Step 3: Cross multiply
   585,087,648x = 1,218,603,012 × 1,218,603,012
4. Step 4: Simplify right side
   585,087,648x = 1,484,993,300,855,472,128
5. Step 5: Solve for x
   x = 1,484,993,300,855,472,128/585,087,648
6. Step 6: Final answer
   x = 2,538,069,818.99