Finding the Third Proportional to 42,554,665 and 67,394,621.50

Step by Step Solution

1. Step 1: Write the proportion equation
   42,554,665 : 67,394,621.50 = 67,394,621.50 : x
2. Step 2: Convert to fraction form
   42,554,665/67,394,621.50 = 67,394,621.50/x
3. Step 3: Cross multiply
   42,554,665x = 67,394,621.50 × 67,394,621.50
4. Step 4: Simplify right side
   42,554,665x = 4,542,035,007,128,262
5. Step 5: Solve for x
   x = 4,542,035,007,128,262/42,554,665
6. Step 6: Final answer
   x = 106,734,126.73