Finding the Third Proportional to 12,845,012 and 21,087,017

Step by Step Solution

1. Step 1: Write the proportion equation
   12,845,012 : 21,087,017 = 21,087,017 : x
2. Step 2: Convert to fraction form
   12,845,012/21,087,017 = 21,087,017/x
3. Step 3: Cross multiply
   12,845,012x = 21,087,017 × 21,087,017
4. Step 4: Simplify right side
   12,845,012x = 444,662,285,958,289
5. Step 5: Solve for x
   x = 444,662,285,958,289/12,845,012
6. Step 6: Final answer
   x = 34,617,506.47