Finding the Third Proportional to 21,578,858 and 46,235,642

Step by Step Solution

1. Step 1: Write the proportion equation
   21,578,858 : 46,235,642 = 46,235,642 : x
2. Step 2: Convert to fraction form
   21,578,858/46,235,642 = 46,235,642/x
3. Step 3: Cross multiply
   21,578,858x = 46,235,642 × 46,235,642
4. Step 4: Simplify right side
   21,578,858x = 2,137,734,591,152,164
5. Step 5: Solve for x
   x = 2,137,734,591,152,164/21,578,858
6. Step 6: Final answer
   x = 99,066,159.62