Finding the Third Proportional to 42,327 and 56,187

Step by Step Solution

1. Step 1: Write the proportion equation
   42,327 : 56,187 = 56,187 : x
2. Step 2: Convert to fraction form
   42,327/56,187 = 56,187/x
3. Step 3: Cross multiply
   42,327x = 56,187 × 56,187
4. Step 4: Simplify right side
   42,327x = 3,156,978,969
5. Step 5: Solve for x
   x = 3,156,978,969/42,327
6. Step 6: Final answer
   x = 74,585.46