Finding the Third Proportional to 30,171 and 42,430.50

Step by Step Solution

1. Step 1: Write the proportion equation
   30,171 : 42,430.50 = 42,430.50 : x
2. Step 2: Convert to fraction form
   30,171/42,430.50 = 42,430.50/x
3. Step 3: Cross multiply
   30,171x = 42,430.50 × 42,430.50
4. Step 4: Simplify right side
   30,171x = 1,800,347,330.25
5. Step 5: Solve for x
   x = 1,800,347,330.25/30,171
6. Step 6: Final answer
   x = 59,671.45