Finding the Third Proportional to 42,342 and 90,307

Step by Step Solution

1. Step 1: Write the proportion equation
   42,342 : 90,307 = 90,307 : x
2. Step 2: Convert to fraction form
   42,342/90,307 = 90,307/x
3. Step 3: Cross multiply
   42,342x = 90,307 × 90,307
4. Step 4: Simplify right side
   42,342x = 8,155,354,249
5. Step 5: Solve for x
   x = 8,155,354,249/42,342
6. Step 6: Final answer
   x = 192,606.73