Finding the Third Proportional to 42,402 and 90,600

Step by Step Solution

1. Step 1: Write the proportion equation
   42,402 : 90,600 = 90,600 : x
2. Step 2: Convert to fraction form
   42,402/90,600 = 90,600/x
3. Step 3: Cross multiply
   42,402x = 90,600 × 90,600
4. Step 4: Simplify right side
   42,402x = 8,208,360,000
5. Step 5: Solve for x
   x = 8,208,360,000/42,402
6. Step 6: Final answer
   x = 193,584.26