Finding the Third Proportional to 143,680 and 308,528

Step by Step Solution

1. Step 1: Write the proportion equation
   143,680 : 308,528 = 308,528 : x
2. Step 2: Convert to fraction form
   143,680/308,528 = 308,528/x
3. Step 3: Cross multiply
   143,680x = 308,528 × 308,528
4. Step 4: Simplify right side
   143,680x = 95,189,526,784
5. Step 5: Solve for x
   x = 95,189,526,784/143,680
6. Step 6: Final answer
   x = 662,510.63