Finding the Third Proportional to 42,361 and 56,473

Step by Step Solution

1. Step 1: Write the proportion equation
   42,361 : 56,473 = 56,473 : x
2. Step 2: Convert to fraction form
   42,361/56,473 = 56,473/x
3. Step 3: Cross multiply
   42,361x = 56,473 × 56,473
4. Step 4: Simplify right side
   42,361x = 3,189,199,729
5. Step 5: Solve for x
   x = 3,189,199,729/42,361
6. Step 6: Final answer
   x = 75,286.22