Finding the Third Proportional to 30,219 and 42,478.50

Step by Step Solution

1. Step 1: Write the proportion equation
   30,219 : 42,478.50 = 42,478.50 : x
2. Step 2: Convert to fraction form
   30,219/42,478.50 = 42,478.50/x
3. Step 3: Cross multiply
   30,219x = 42,478.50 × 42,478.50
4. Step 4: Simplify right side
   30,219x = 1,804,422,962.25
5. Step 5: Solve for x
   x = 1,804,422,962.25/30,219
6. Step 6: Final answer
   x = 59,711.54