Finding the Third Proportional to 19,218 and 42,219.50

Step by Step Solution

1. Step 1: Write the proportion equation
   19,218 : 42,219.50 = 42,219.50 : x
2. Step 2: Convert to fraction form
   19,218/42,219.50 = 42,219.50/x
3. Step 3: Cross multiply
   19,218x = 42,219.50 × 42,219.50
4. Step 4: Simplify right side
   19,218x = 1,782,486,180.25
5. Step 5: Solve for x
   x = 1,782,486,180.25/19,218
6. Step 6: Final answer
   x = 92,750.87