Finding the Third Proportional to 5,986,521 and 13,131,909

Step by Step Solution

1. Step 1: Write the proportion equation
   5,986,521 : 13,131,909 = 13,131,909 : x
2. Step 2: Convert to fraction form
   5,986,521/13,131,909 = 13,131,909/x
3. Step 3: Cross multiply
   5,986,521x = 13,131,909 × 13,131,909
4. Step 4: Simplify right side
   5,986,521x = 172,447,033,984,281
5. Step 5: Solve for x
   x = 172,447,033,984,281/5,986,521
6. Step 6: Final answer
   x = 28,805,884.75