Finding the Third Proportional to 21,400 and 35,300

Step by Step Solution

1. Step 1: Write the proportion equation
   21,400 : 35,300 = 35,300 : x
2. Step 2: Convert to fraction form
   21,400/35,300 = 35,300/x
3. Step 3: Cross multiply
   21,400x = 35,300 × 35,300
4. Step 4: Simplify right side
   21,400x = 1,246,090,000
5. Step 5: Solve for x
   x = 1,246,090,000/21,400
6. Step 6: Final answer
   x = 58,228.50