Finding the Third Proportional to 42,891.50 and 61,877

Step by Step Solution

1. Step 1: Write the proportion equation
   42,891.50 : 61,877 = 61,877 : x
2. Step 2: Convert to fraction form
   42,891.50/61,877 = 61,877/x
3. Step 3: Cross multiply
   42,891.50x = 61,877 × 61,877
4. Step 4: Simplify right side
   42,891.50x = 3,828,763,129
5. Step 5: Solve for x
   x = 3,828,763,129/42,891.50
6. Step 6: Final answer
   x = 89,266.24