Finding the Third Proportional to 30,230 and 64,120

Step by Step Solution

1. Step 1: Write the proportion equation
   30,230 : 64,120 = 64,120 : x
2. Step 2: Convert to fraction form
   30,230/64,120 = 64,120/x
3. Step 3: Cross multiply
   30,230x = 64,120 × 64,120
4. Step 4: Simplify right side
   30,230x = 4,111,374,400
5. Step 5: Solve for x
   x = 4,111,374,400/30,230
6. Step 6: Final answer
   x = 136,003.12