Finding the Third Proportional to 19,799,661 and 31,505,467.50

Step by Step Solution

1. Step 1: Write the proportion equation
   19,799,661 : 31,505,467.50 = 31,505,467.50 : x
2. Step 2: Convert to fraction form
   19,799,661/31,505,467.50 = 31,505,467.50/x
3. Step 3: Cross multiply
   19,799,661x = 31,505,467.50 × 31,505,467.50
4. Step 4: Simplify right side
   19,799,661x = 992,594,482,393,556.25
5. Step 5: Solve for x
   x = 992,594,482,393,556.25/19,799,661
6. Step 6: Final answer
   x = 50,131,892.78