Finding the Third Proportional to 28,680.61 and 61,513.03

Step by Step Solution

1. Step 1: Write the proportion equation
   28,680.61 : 61,513.03 = 61,513.03 : x
2. Step 2: Convert to fraction form
   28,680.61/61,513.03 = 61,513.03/x
3. Step 3: Cross multiply
   28,680.61x = 61,513.03 × 61,513.03
4. Step 4: Simplify right side
   28,680.61x = 3,783,853,013.56
5. Step 5: Solve for x
   x = 3,783,853,013.56/28,680.61
6. Step 6: Final answer
   x = 131,930.70