Finding the Third Proportional to 172,706 and 371,428

Step by Step Solution

1. Step 1: Write the proportion equation
   172,706 : 371,428 = 371,428 : x
2. Step 2: Convert to fraction form
   172,706/371,428 = 371,428/x
3. Step 3: Cross multiply
   172,706x = 371,428 × 371,428
4. Step 4: Simplify right side
   172,706x = 137,958,759,184
5. Step 5: Solve for x
   x = 137,958,759,184/172,706
6. Step 6: Final answer
   x = 798,806.99