Finding the Third Proportional to 34,287 and 69,528

Step by Step Solution

1. Step 1: Write the proportion equation
   34,287 : 69,528 = 69,528 : x
2. Step 2: Convert to fraction form
   34,287/69,528 = 69,528/x
3. Step 3: Cross multiply
   34,287x = 69,528 × 69,528
4. Step 4: Simplify right side
   34,287x = 4,834,142,784
5. Step 5: Solve for x
   x = 4,834,142,784/34,287
6. Step 6: Final answer
   x = 140,990.54