Finding the Third Proportional to 19,709,536 and 42,142,912

Step by Step Solution

1. Step 1: Write the proportion equation
   19,709,536 : 42,142,912 = 42,142,912 : x
2. Step 2: Convert to fraction form
   19,709,536/42,142,912 = 42,142,912/x
3. Step 3: Cross multiply
   19,709,536x = 42,142,912 × 42,142,912
4. Step 4: Simplify right side
   19,709,536x = 1,776,025,031,839,744
5. Step 5: Solve for x
   x = 1,776,025,031,839,744/19,709,536
6. Step 6: Final answer
   x = 90,109,936.22