Finding the Third Proportional to 30,221.50 and 42,483.75

Step by Step Solution

1. Step 1: Write the proportion equation
   30,221.50 : 42,483.75 = 42,483.75 : x
2. Step 2: Convert to fraction form
   30,221.50/42,483.75 = 42,483.75/x
3. Step 3: Cross multiply
   30,221.50x = 42,483.75 × 42,483.75
4. Step 4: Simplify right side
   30,221.50x = 1,804,869,014.06
5. Step 5: Solve for x
   x = 1,804,869,014.06/30,221.50
6. Step 6: Final answer
   x = 59,721.36