Finding the Third Proportional to 111,863,167 and 263,692,613

Step by Step Solution

1. Step 1: Write the proportion equation
   111,863,167 : 263,692,613 = 263,692,613 : x
2. Step 2: Convert to fraction form
   111,863,167/263,692,613 = 263,692,613/x
3. Step 3: Cross multiply
   111,863,167x = 263,692,613 × 263,692,613
4. Step 4: Simplify right side
   111,863,167x = 69,533,794,150,767,768
5. Step 5: Solve for x
   x = 69,533,794,150,767,768/111,863,167
6. Step 6: Final answer
   x = 621,596,867.10