Finding the Third Proportional to 30,790 and 67,124

Step by Step Solution

1. Step 1: Write the proportion equation
   30,790 : 67,124 = 67,124 : x
2. Step 2: Convert to fraction form
   30,790/67,124 = 67,124/x
3. Step 3: Cross multiply
   30,790x = 67,124 × 67,124
4. Step 4: Simplify right side
   30,790x = 4,505,631,376
5. Step 5: Solve for x
   x = 4,505,631,376/30,790
6. Step 6: Final answer
   x = 146,334.24