Finding the Third Proportional to 74,378 and 111,730

Step by Step Solution

1. Step 1: Write the proportion equation
   74,378 : 111,730 = 111,730 : x
2. Step 2: Convert to fraction form
   74,378/111,730 = 111,730/x
3. Step 3: Cross multiply
   74,378x = 111,730 × 111,730
4. Step 4: Simplify right side
   74,378x = 12,483,592,900
5. Step 5: Solve for x
   x = 12,483,592,900/74,378
6. Step 6: Final answer
   x = 167,839.86