Finding the Third Proportional to 21,200 and 28,132

Step by Step Solution

1. Step 1: Write the proportion equation
   21,200 : 28,132 = 28,132 : x
2. Step 2: Convert to fraction form
   21,200/28,132 = 28,132/x
3. Step 3: Cross multiply
   21,200x = 28,132 × 28,132
4. Step 4: Simplify right side
   21,200x = 791,409,424
5. Step 5: Solve for x
   x = 791,409,424/21,200
6. Step 6: Final answer
   x = 37,330.63