Finding the Third Proportional to 42,642 and 90,477

Step by Step Solution

1. Step 1: Write the proportion equation
   42,642 : 90,477 = 90,477 : x
2. Step 2: Convert to fraction form
   42,642/90,477 = 90,477/x
3. Step 3: Cross multiply
   42,642x = 90,477 × 90,477
4. Step 4: Simplify right side
   42,642x = 8,186,087,529
5. Step 5: Solve for x
   x = 8,186,087,529/42,642
6. Step 6: Final answer
   x = 191,972.41