Finding the Third Proportional to 2,666,686.50 and 5,865,057

Step by Step Solution

1. Step 1: Write the proportion equation
   2,666,686.50 : 5,865,057 = 5,865,057 : x
2. Step 2: Convert to fraction form
   2,666,686.50/5,865,057 = 5,865,057/x
3. Step 3: Cross multiply
   2,666,686.50x = 5,865,057 × 5,865,057
4. Step 4: Simplify right side
   2,666,686.50x = 34,398,893,613,249
5. Step 5: Solve for x
   x = 34,398,893,613,249/2,666,686.50
6. Step 6: Final answer
   x = 12,899,489.17