Finding the Third Proportional to 28,086.75 and 61,691.63

Step by Step Solution

1. Step 1: Write the proportion equation
   28,086.75 : 61,691.63 = 61,691.63 : x
2. Step 2: Convert to fraction form
   28,086.75/61,691.63 = 61,691.63/x
3. Step 3: Cross multiply
   28,086.75x = 61,691.63 × 61,691.63
4. Step 4: Simplify right side
   28,086.75x = 3,805,856,595.14
5. Step 5: Solve for x
   x = 3,805,856,595.14/28,086.75
6. Step 6: Final answer
   x = 135,503.63