Finding the Third Proportional to 9,174,776 and 12,858,386

Step by Step Solution

1. Step 1: Write the proportion equation
   9,174,776 : 12,858,386 = 12,858,386 : x
2. Step 2: Convert to fraction form
   9,174,776/12,858,386 = 12,858,386/x
3. Step 3: Cross multiply
   9,174,776x = 12,858,386 × 12,858,386
4. Step 4: Simplify right side
   9,174,776x = 165,338,090,524,996
5. Step 5: Solve for x
   x = 165,338,090,524,996/9,174,776
6. Step 6: Final answer
   x = 18,020,940.30