Finding the Third Proportional to 19,939,684 and 42,642,764

Step by Step Solution

1. Step 1: Write the proportion equation
   19,939,684 : 42,642,764 = 42,642,764 : x
2. Step 2: Convert to fraction form
   19,939,684/42,642,764 = 42,642,764/x
3. Step 3: Cross multiply
   19,939,684x = 42,642,764 × 42,642,764
4. Step 4: Simplify right side
   19,939,684x = 1,818,405,321,559,696
5. Step 5: Solve for x
   x = 1,818,405,321,559,696/19,939,684
6. Step 6: Final answer
   x = 91,195,292.84