Finding the Third Proportional to 42,143 and 90,118

Step by Step Solution

1. Step 1: Write the proportion equation
   42,143 : 90,118 = 90,118 : x
2. Step 2: Convert to fraction form
   42,143/90,118 = 90,118/x
3. Step 3: Cross multiply
   42,143x = 90,118 × 90,118
4. Step 4: Simplify right side
   42,143x = 8,121,253,924
5. Step 5: Solve for x
   x = 8,121,253,924/42,143
6. Step 6: Final answer
   x = 192,707.07