Finding the Third Proportional to 17,987,880 and 39,131,188

Step by Step Solution

1. Step 1: Write the proportion equation
   17,987,880 : 39,131,188 = 39,131,188 : x
2. Step 2: Convert to fraction form
   17,987,880/39,131,188 = 39,131,188/x
3. Step 3: Cross multiply
   17,987,880x = 39,131,188 × 39,131,188
4. Step 4: Simplify right side
   17,987,880x = 1,531,249,874,291,344
5. Step 5: Solve for x
   x = 1,531,249,874,291,344/17,987,880
6. Step 6: Final answer
   x = 85,126,756.14