Finding the Third Proportional to 21,686,640 and 45,609,768

Step by Step Solution

1. Step 1: Write the proportion equation
   21,686,640 : 45,609,768 = 45,609,768 : x
2. Step 2: Convert to fraction form
   21,686,640/45,609,768 = 45,609,768/x
3. Step 3: Cross multiply
   21,686,640x = 45,609,768 × 45,609,768
4. Step 4: Simplify right side
   21,686,640x = 2,080,250,937,013,824
5. Step 5: Solve for x
   x = 2,080,250,937,013,824/21,686,640
6. Step 6: Final answer
   x = 95,923,155.32