Finding the Third Proportional to 42,318 and 90,068

Step by Step Solution

1. Step 1: Write the proportion equation
   42,318 : 90,068 = 90,068 : x
2. Step 2: Convert to fraction form
   42,318/90,068 = 90,068/x
3. Step 3: Cross multiply
   42,318x = 90,068 × 90,068
4. Step 4: Simplify right side
   42,318x = 8,112,244,624
5. Step 5: Solve for x
   x = 8,112,244,624/42,318
6. Step 6: Final answer
   x = 191,697.26