Finding the Third Proportional to 42,067,945 and 64,621,515

Step by Step Solution

1. Step 1: Write the proportion equation
   42,067,945 : 64,621,515 = 64,621,515 : x
2. Step 2: Convert to fraction form
   42,067,945/64,621,515 = 64,621,515/x
3. Step 3: Cross multiply
   42,067,945x = 64,621,515 × 64,621,515
4. Step 4: Simplify right side
   42,067,945x = 4,175,940,200,895,225
5. Step 5: Solve for x
   x = 4,175,940,200,895,225/42,067,945
6. Step 6: Final answer
   x = 99,266,560.34