Finding the Third Proportional to 42,347 and 90,318

Step by Step Solution

1. Step 1: Write the proportion equation
   42,347 : 90,318 = 90,318 : x
2. Step 2: Convert to fraction form
   42,347/90,318 = 90,318/x
3. Step 3: Cross multiply
   42,347x = 90,318 × 90,318
4. Step 4: Simplify right side
   42,347x = 8,157,341,124
5. Step 5: Solve for x
   x = 8,157,341,124/42,347
6. Step 6: Final answer
   x = 192,630.91