Finding the Third Proportional to 19,456,240 and 42,235,408

Step by Step Solution

1. Step 1: Write the proportion equation
   19,456,240 : 42,235,408 = 42,235,408 : x
2. Step 2: Convert to fraction form
   19,456,240/42,235,408 = 42,235,408/x
3. Step 3: Cross multiply
   19,456,240x = 42,235,408 × 42,235,408
4. Step 4: Simplify right side
   19,456,240x = 1,783,829,688,926,464
5. Step 5: Solve for x
   x = 1,783,829,688,926,464/19,456,240
6. Step 6: Final answer
   x = 91,684,194.32