Finding the Third Proportional to 30,421 and 62,300

Step by Step Solution

1. Step 1: Write the proportion equation
   30,421 : 62,300 = 62,300 : x
2. Step 2: Convert to fraction form
   30,421/62,300 = 62,300/x
3. Step 3: Cross multiply
   30,421x = 62,300 × 62,300
4. Step 4: Simplify right side
   30,421x = 3,881,290,000
5. Step 5: Solve for x
   x = 3,881,290,000/30,421
6. Step 6: Final answer
   x = 127,585.88