Finding the Third Proportional to 42,656 and 90,229

Step by Step Solution

1. Step 1: Write the proportion equation
   42,656 : 90,229 = 90,229 : x
2. Step 2: Convert to fraction form
   42,656/90,229 = 90,229/x
3. Step 3: Cross multiply
   42,656x = 90,229 × 90,229
4. Step 4: Simplify right side
   42,656x = 8,141,272,441
5. Step 5: Solve for x
   x = 8,141,272,441/42,656
6. Step 6: Final answer
   x = 190,858.79