Finding the Third Proportional to 111,886,612 and 263,748,514

Step by Step Solution

1. Step 1: Write the proportion equation
   111,886,612 : 263,748,514 = 263,748,514 : x
2. Step 2: Convert to fraction form
   111,886,612/263,748,514 = 263,748,514/x
3. Step 3: Cross multiply
   111,886,612x = 263,748,514 × 263,748,514
4. Step 4: Simplify right side
   111,886,612x = 69,563,278,637,208,192
5. Step 5: Solve for x
   x = 69,563,278,637,208,192/111,886,612
6. Step 6: Final answer
   x = 621,730,137.27