Finding the Third Proportional to 31,930 and 69,387

Step by Step Solution

1. Step 1: Write the proportion equation
   31,930 : 69,387 = 69,387 : x
2. Step 2: Convert to fraction form
   31,930/69,387 = 69,387/x
3. Step 3: Cross multiply
   31,930x = 69,387 × 69,387
4. Step 4: Simplify right side
   31,930x = 4,814,555,769
5. Step 5: Solve for x
   x = 4,814,555,769/31,930
6. Step 6: Final answer
   x = 150,784.71