Finding the Third Proportional to 35,720 and 72,412

Step by Step Solution

1. Step 1: Write the proportion equation
   35,720 : 72,412 = 72,412 : x
2. Step 2: Convert to fraction form
   35,720/72,412 = 72,412/x
3. Step 3: Cross multiply
   35,720x = 72,412 × 72,412
4. Step 4: Simplify right side
   35,720x = 5,243,497,744
5. Step 5: Solve for x
   x = 5,243,497,744/35,720
6. Step 6: Final answer
   x = 146,794.45