Finding the Third Proportional to 37,200 and 55,800

Step by Step Solution

1. Step 1: Write the proportion equation
   37,200 : 55,800 = 55,800 : x
2. Step 2: Convert to fraction form
   37,200/55,800 = 55,800/x
3. Step 3: Cross multiply
   37,200x = 55,800 × 55,800
4. Step 4: Simplify right side
   37,200x = 3,113,640,000
5. Step 5: Solve for x
   x = 3,113,640,000/37,200
6. Step 6: Final answer
   x = 83,700