Finding the Third Proportional to 42,008.63 and 87,912

Step by Step Solution

1. Step 1: Write the proportion equation
   42,008.63 : 87,912 = 87,912 : x
2. Step 2: Convert to fraction form
   42,008.63/87,912 = 87,912/x
3. Step 3: Cross multiply
   42,008.63x = 87,912 × 87,912
4. Step 4: Simplify right side
   42,008.63x = 7,728,519,744
5. Step 5: Solve for x
   x = 7,728,519,744/42,008.63
6. Step 6: Final answer
   x = 183,974.59