Finding the Third Proportional to 1,139,616 and 2,431,776

Step by Step Solution

1. Step 1: Write the proportion equation
   1,139,616 : 2,431,776 = 2,431,776 : x
2. Step 2: Convert to fraction form
   1,139,616/2,431,776 = 2,431,776/x
3. Step 3: Cross multiply
   1,139,616x = 2,431,776 × 2,431,776
4. Step 4: Simplify right side
   1,139,616x = 5,913,534,514,176
5. Step 5: Solve for x
   x = 5,913,534,514,176/1,139,616
6. Step 6: Final answer
   x = 5,189,058.87