Finding the Third Proportional to 42,482 and 74,008

Step by Step Solution

1. Step 1: Write the proportion equation
   42,482 : 74,008 = 74,008 : x
2. Step 2: Convert to fraction form
   42,482/74,008 = 74,008/x
3. Step 3: Cross multiply
   42,482x = 74,008 × 74,008
4. Step 4: Simplify right side
   42,482x = 5,477,184,064
5. Step 5: Solve for x
   x = 5,477,184,064/42,482
6. Step 6: Final answer
   x = 128,929.52