Finding the Third Proportional to 42,687.75 and 61,671.38

Step by Step Solution

1. Step 1: Write the proportion equation
   42,687.75 : 61,671.38 = 61,671.38 : x
2. Step 2: Convert to fraction form
   42,687.75/61,671.38 = 61,671.38/x
3. Step 3: Cross multiply
   42,687.75x = 61,671.38 × 61,671.38
4. Step 4: Simplify right side
   42,687.75x = 3,803,358,494.39
5. Step 5: Solve for x
   x = 3,803,358,494.39/42,687.75
6. Step 6: Final answer
   x = 89,097.19