Finding the Third Proportional to 13,900.50 and 30,570.75

Step by Step Solution

1. Step 1: Write the proportion equation
   13,900.50 : 30,570.75 = 30,570.75 : x
2. Step 2: Convert to fraction form
   13,900.50/30,570.75 = 30,570.75/x
3. Step 3: Cross multiply
   13,900.50x = 30,570.75 × 30,570.75
4. Step 4: Simplify right side
   13,900.50x = 934,570,755.56
5. Step 5: Solve for x
   x = 934,570,755.56/13,900.50
6. Step 6: Final answer
   x = 67,232.89