Finding the Third Proportional to 28,770 and 61,540.50

Step by Step Solution

1. Step 1: Write the proportion equation
   28,770 : 61,540.50 = 61,540.50 : x
2. Step 2: Convert to fraction form
   28,770/61,540.50 = 61,540.50/x
3. Step 3: Cross multiply
   28,770x = 61,540.50 × 61,540.50
4. Step 4: Simplify right side
   28,770x = 3,787,233,140.25
5. Step 5: Solve for x
   x = 3,787,233,140.25/28,770
6. Step 6: Final answer
   x = 131,638.27